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Finding the Fourth Proportional to 99,539.93, 137,363.93 and 54,217.77

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Solution

The fourth proportional to 99,539.93, 137,363.93 and 54,217.77 is: 74,819.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,539.93 : 137,363.93 = 54,217.77 : x
  2. Step 2: Convert to fraction form
    99,539.93/137,363.93 = 54,217.77/x
  3. Step 3: Cross multiply
    99,539.93x = 137,363.93 × 54,217.77
  4. Step 4: Simplify right side
    99,539.93x = 7,447,565,276.22
  5. Step 5: Solve for x
    x = 7,447,565,276.22/99,539.93
  6. Step 6: Final answer
    x = 74,819.88

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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.