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Finding the Fourth Proportional to 92,053.60, 138,046.38 and 72,370.60

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Solution

The fourth proportional to 92,053.60, 138,046.38 and 72,370.60 is: 108,529.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,053.60 : 138,046.38 = 72,370.60 : x
  2. Step 2: Convert to fraction form
    92,053.60/138,046.38 = 72,370.60/x
  3. Step 3: Cross multiply
    92,053.60x = 138,046.38 × 72,370.60
  4. Step 4: Simplify right side
    92,053.60x = 9,990,498,731.92
  5. Step 5: Solve for x
    x = 9,990,498,731.92/92,053.60
  6. Step 6: Final answer
    x = 108,529.15

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