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Finding the Fourth Proportional to 125,131.96, 187,227.06 and 87,764.95

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Solution

The fourth proportional to 125,131.96, 187,227.06 and 87,764.95 is: 131,317.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,131.96 : 187,227.06 = 87,764.95 : x
  2. Step 2: Convert to fraction form
    125,131.96/187,227.06 = 87,764.95/x
  3. Step 3: Cross multiply
    125,131.96x = 187,227.06 × 87,764.95
  4. Step 4: Simplify right side
    125,131.96x = 16,431,973,559.55
  5. Step 5: Solve for x
    x = 16,431,973,559.55/125,131.96
  6. Step 6: Final answer
    x = 131,317.16

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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.