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Finding the Fourth Proportional to 125,666.16, 188,512.98 and 54,539.90

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Solution

The fourth proportional to 125,666.16, 188,512.98 and 54,539.90 is: 81,815.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,666.16 : 188,512.98 = 54,539.90 : x
  2. Step 2: Convert to fraction form
    125,666.16/188,512.98 = 54,539.90/x
  3. Step 3: Cross multiply
    125,666.16x = 188,512.98 × 54,539.90
  4. Step 4: Simplify right side
    125,666.16x = 10,281,479,077.90
  5. Step 5: Solve for x
    x = 10,281,479,077.90/125,666.16
  6. Step 6: Final answer
    x = 81,815.81

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Why These Related Problems?

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