Home / 102,789,768.50-141,881,639.25-66,120,342.74

Finding the Fourth Proportional to 102,789,768.50, 141,881,639.25 and 66,120,342.74

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Solution

The fourth proportional to 102,789,768.50, 141,881,639.25 and 66,120,342.74 is: 91,266,502.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,789,768.50 : 141,881,639.25 = 66,120,342.74 : x
  2. Step 2: Convert to fraction form
    102,789,768.50/141,881,639.25 = 66,120,342.74/x
  3. Step 3: Cross multiply
    102,789,768.50x = 141,881,639.25 × 66,120,342.74
  4. Step 4: Simplify right side
    102,789,768.50x = 9,381,262,615,723,036
  5. Step 5: Solve for x
    x = 9,381,262,615,723,036/102,789,768.50
  6. Step 6: Final answer
    x = 91,266,502.03

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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.