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Finding the Fourth Proportional to 102,480.80, 141,402 and 62,215.76

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Solution

The fourth proportional to 102,480.80, 141,402 and 62,215.76 is: 85,844.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,480.80 : 141,402 = 62,215.76 : x
  2. Step 2: Convert to fraction form
    102,480.80/141,402 = 62,215.76/x
  3. Step 3: Cross multiply
    102,480.80x = 141,402 × 62,215.76
  4. Step 4: Simplify right side
    102,480.80x = 8,797,432,895.52
  5. Step 5: Solve for x
    x = 8,797,432,895.52/102,480.80
  6. Step 6: Final answer
    x = 85,844.69

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1.5x scale

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.