Home / 102,789,769-141,881,639.94-66,120,343.24

Finding the Fourth Proportional to 102,789,769, 141,881,639.94 and 66,120,343.24

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Solution

The fourth proportional to 102,789,769, 141,881,639.94 and 66,120,343.24 is: 91,266,502.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,789,769 : 141,881,639.94 = 66,120,343.24 : x
  2. Step 2: Convert to fraction form
    102,789,769/141,881,639.94 = 66,120,343.24/x
  3. Step 3: Cross multiply
    102,789,769x = 141,881,639.94 × 66,120,343.24
  4. Step 4: Simplify right side
    102,789,769x = 9,381,262,732,286,894
  5. Step 5: Solve for x
    x = 9,381,262,732,286,894/102,789,769
  6. Step 6: Final answer
    x = 91,266,502.72

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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.