Home / 129,310,925.20-193,966,387.80-115,280,882.80

Finding the Fourth Proportional to 129,310,925.20, 193,966,387.80 and 115,280,882.80

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Solution

The fourth proportional to 129,310,925.20, 193,966,387.80 and 115,280,882.80 is: 172,921,324.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,310,925.20 : 193,966,387.80 = 115,280,882.80 : x
  2. Step 2: Convert to fraction form
    129,310,925.20/193,966,387.80 = 115,280,882.80/x
  3. Step 3: Cross multiply
    129,310,925.20x = 193,966,387.80 × 115,280,882.80
  4. Step 4: Simplify right side
    129,310,925.20x = 22,360,616,419,111,152
  5. Step 5: Solve for x
    x = 22,360,616,419,111,152/129,310,925.20
  6. Step 6: Final answer
    x = 172,921,324.20

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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.