Home / 156,691,979-216,217,760.52-90,602,475.74

Finding the Fourth Proportional to 156,691,979, 216,217,760.52 and 90,602,475.74

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Solution

The fourth proportional to 156,691,979, 216,217,760.52 and 90,602,475.74 is: 125,021,488.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,691,979 : 216,217,760.52 = 90,602,475.74 : x
  2. Step 2: Convert to fraction form
    156,691,979/216,217,760.52 = 90,602,475.74/x
  3. Step 3: Cross multiply
    156,691,979x = 216,217,760.52 × 90,602,475.74
  4. Step 4: Simplify right side
    156,691,979x = 19,589,864,402,070,428
  5. Step 5: Solve for x
    x = 19,589,864,402,070,428/156,691,979
  6. Step 6: Final answer
    x = 125,021,488.19

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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.