Home / 129,615,182,616.32-178,865,068,886.62-71,745,934,469.88

Finding the Fourth Proportional to 129,615,182,616.32, 178,865,068,886.62 and 71,745,934,469.88

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Solution

The fourth proportional to 129,615,182,616.32, 178,865,068,886.62 and 71,745,934,469.88 is: 99,007,240,141.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,615,182,616.32 : 178,865,068,886.62 = 71,745,934,469.88 : x
  2. Step 2: Convert to fraction form
    129,615,182,616.32/178,865,068,886.62 = 71,745,934,469.88/x
  3. Step 3: Cross multiply
    129,615,182,616.32x = 178,865,068,886.62 × 71,745,934,469.88
  4. Step 4: Simplify right side
    129,615,182,616.32x = 12,832,841,511,290,011,648,000
  5. Step 5: Solve for x
    x = 12,832,841,511,290,011,648,000/129,615,182,616.32
  6. Step 6: Final answer
    x = 99,007,240,141.59

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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.