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Finding the Fourth Proportional to 125,385.72, 188,034.81 and 55,226.76

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Solution

The fourth proportional to 125,385.72, 188,034.81 and 55,226.76 is: 82,820.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,385.72 : 188,034.81 = 55,226.76 : x
  2. Step 2: Convert to fraction form
    125,385.72/188,034.81 = 55,226.76/x
  3. Step 3: Cross multiply
    125,385.72x = 188,034.81 × 55,226.76
  4. Step 4: Simplify right side
    125,385.72x = 10,384,553,323.52
  5. Step 5: Solve for x
    x = 10,384,553,323.52/125,385.72
  6. Step 6: Final answer
    x = 82,820.86

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1.5x scale

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.