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Finding the Fourth Proportional to 94,711.80, 141,894.90 and 77,086.20

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Solution

The fourth proportional to 94,711.80, 141,894.90 and 77,086.20 is: 115,488.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,711.80 : 141,894.90 = 77,086.20 : x
  2. Step 2: Convert to fraction form
    94,711.80/141,894.90 = 77,086.20/x
  3. Step 3: Cross multiply
    94,711.80x = 141,894.90 × 77,086.20
  4. Step 4: Simplify right side
    94,711.80x = 10,938,138,640.38
  5. Step 5: Solve for x
    x = 10,938,138,640.38/94,711.80
  6. Step 6: Final answer
    x = 115,488.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.