Home / 128,304,095.60-192,456,143.40-115,315,065.20

Finding the Fourth Proportional to 128,304,095.60, 192,456,143.40 and 115,315,065.20

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Solution

The fourth proportional to 128,304,095.60, 192,456,143.40 and 115,315,065.20 is: 172,972,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,095.60 : 192,456,143.40 = 115,315,065.20 : x
  2. Step 2: Convert to fraction form
    128,304,095.60/192,456,143.40 = 115,315,065.20/x
  3. Step 3: Cross multiply
    128,304,095.60x = 192,456,143.40 × 115,315,065.20
  4. Step 4: Simplify right side
    128,304,095.60x = 22,193,092,724,311,552
  5. Step 5: Solve for x
    x = 22,193,092,724,311,552/128,304,095.60
  6. Step 6: Final answer
    x = 172,972,597.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.