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Finding the Fourth Proportional to 99,920.59, 137,886.30 and 54,600.14

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Solution

The fourth proportional to 99,920.59, 137,886.30 and 54,600.14 is: 75,345.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,920.59 : 137,886.30 = 54,600.14 : x
  2. Step 2: Convert to fraction form
    99,920.59/137,886.30 = 54,600.14/x
  3. Step 3: Cross multiply
    99,920.59x = 137,886.30 × 54,600.14
  4. Step 4: Simplify right side
    99,920.59x = 7,528,611,628.80
  5. Step 5: Solve for x
    x = 7,528,611,628.80/99,920.59
  6. Step 6: Final answer
    x = 75,345.95

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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.