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Finding the Fourth Proportional to 125,027.64, 187,373.71 and 80,631.54

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Solution

The fourth proportional to 125,027.64, 187,373.71 and 80,631.54 is: 120,839.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,027.64 : 187,373.71 = 80,631.54 : x
  2. Step 2: Convert to fraction form
    125,027.64/187,373.71 = 80,631.54/x
  3. Step 3: Cross multiply
    125,027.64x = 187,373.71 × 80,631.54
  4. Step 4: Simplify right side
    125,027.64x = 15,108,230,792.81
  5. Step 5: Solve for x
    x = 15,108,230,792.81/125,027.64
  6. Step 6: Final answer
    x = 120,839.13

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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.