Home / 221,500,666,908.78-305,666,935,836.42-125,154,684,795.15

Finding the Fourth Proportional to 221,500,666,908.78, 305,666,935,836.42 and 125,154,684,795.15

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Solution

The fourth proportional to 221,500,666,908.78, 305,666,935,836.42 and 125,154,684,795.15 is: 172,711,213,653.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,500,666,908.78 : 305,666,935,836.42 = 125,154,684,795.15 : x
  2. Step 2: Convert to fraction form
    221,500,666,908.78/305,666,935,836.42 = 125,154,684,795.15/x
  3. Step 3: Cross multiply
    221,500,666,908.78x = 305,666,935,836.42 × 125,154,684,795.15
  4. Step 4: Simplify right side
    221,500,666,908.78x = 38,255,649,006,906,482,098,176
  5. Step 5: Solve for x
    x = 38,255,649,006,906,482,098,176/221,500,666,908.78
  6. Step 6: Final answer
    x = 172,711,213,653.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.