Home / 128,437.32-177,240.84-71,076.62

Finding the Fourth Proportional to 128,437.32, 177,240.84 and 71,076.62

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Solution

The fourth proportional to 128,437.32, 177,240.84 and 71,076.62 is: 98,084.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,437.32 : 177,240.84 = 71,076.62 : x
  2. Step 2: Convert to fraction form
    128,437.32/177,240.84 = 71,076.62/x
  3. Step 3: Cross multiply
    128,437.32x = 177,240.84 × 71,076.62
  4. Step 4: Simplify right side
    128,437.32x = 12,597,679,833.16
  5. Step 5: Solve for x
    x = 12,597,679,833.16/128,437.32
  6. Step 6: Final answer
    x = 98,084.26

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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.