Home / 129,615,182,635.22-178,865,068,912.71-71,745,934,488.79

Finding the Fourth Proportional to 129,615,182,635.22, 178,865,068,912.71 and 71,745,934,488.79

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Solution

The fourth proportional to 129,615,182,635.22, 178,865,068,912.71 and 71,745,934,488.79 is: 99,007,240,167.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,615,182,635.22 : 178,865,068,912.71 = 71,745,934,488.79 : x
  2. Step 2: Convert to fraction form
    129,615,182,635.22/178,865,068,912.71 = 71,745,934,488.79/x
  3. Step 3: Cross multiply
    129,615,182,635.22x = 178,865,068,912.71 × 71,745,934,488.79
  4. Step 4: Simplify right side
    129,615,182,635.22x = 12,832,841,516,544,199,491,584
  5. Step 5: Solve for x
    x = 12,832,841,516,544,199,491,584/129,615,182,635.22
  6. Step 6: Final answer
    x = 99,007,240,167.69

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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.