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Finding the Fourth Proportional to 125,168.31, 187,669.22 and 80,770.82

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Solution

The fourth proportional to 125,168.31, 187,669.22 and 80,770.82 is: 121,102.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,168.31 : 187,669.22 = 80,770.82 : x
  2. Step 2: Convert to fraction form
    125,168.31/187,669.22 = 80,770.82/x
  3. Step 3: Cross multiply
    125,168.31x = 187,669.22 × 80,770.82
  4. Step 4: Simplify right side
    125,168.31x = 15,158,195,445.96
  5. Step 5: Solve for x
    x = 15,158,195,445.96/125,168.31
  6. Step 6: Final answer
    x = 121,102.50

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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.