Home / 129,276,691.20-193,915,036.80-100,366,300.80

Finding the Fourth Proportional to 129,276,691.20, 193,915,036.80 and 100,366,300.80

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Solution

The fourth proportional to 129,276,691.20, 193,915,036.80 and 100,366,300.80 is: 150,549,451.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,276,691.20 : 193,915,036.80 = 100,366,300.80 : x
  2. Step 2: Convert to fraction form
    129,276,691.20/193,915,036.80 = 100,366,300.80/x
  3. Step 3: Cross multiply
    129,276,691.20x = 193,915,036.80 × 100,366,300.80
  4. Step 4: Simplify right side
    129,276,691.20x = 19,462,534,913,111,872
  5. Step 5: Solve for x
    x = 19,462,534,913,111,872/129,276,691.20
  6. Step 6: Final answer
    x = 150,549,451.20

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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.