Home / 103,809.28-143,248.20-58,472.80

Finding the Fourth Proportional to 103,809.28, 143,248.20 and 58,472.80

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Solution

The fourth proportional to 103,809.28, 143,248.20 and 58,472.80 is: 80,687.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,809.28 : 143,248.20 = 58,472.80 : x
  2. Step 2: Convert to fraction form
    103,809.28/143,248.20 = 58,472.80/x
  3. Step 3: Cross multiply
    103,809.28x = 143,248.20 × 58,472.80
  4. Step 4: Simplify right side
    103,809.28x = 8,376,123,348.96
  5. Step 5: Solve for x
    x = 8,376,123,348.96/103,809.28
  6. Step 6: Final answer
    x = 80,687.62

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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.