Home / 102,702.12-141,727.97-57,387.91

Finding the Fourth Proportional to 102,702.12, 141,727.97 and 57,387.91

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Solution

The fourth proportional to 102,702.12, 141,727.97 and 57,387.91 is: 79,194.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,702.12 : 141,727.97 = 57,387.91 : x
  2. Step 2: Convert to fraction form
    102,702.12/141,727.97 = 57,387.91/x
  3. Step 3: Cross multiply
    102,702.12x = 141,727.97 × 57,387.91
  4. Step 4: Simplify right side
    102,702.12x = 8,133,471,718.93
  5. Step 5: Solve for x
    x = 8,133,471,718.93/102,702.12
  6. Step 6: Final answer
    x = 79,194.78

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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.