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Finding the Fourth Proportional to 124,010.70, 185,868.42 and 86,366.96

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Solution

The fourth proportional to 124,010.70, 185,868.42 and 86,366.96 is: 129,447.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,010.70 : 185,868.42 = 86,366.96 : x
  2. Step 2: Convert to fraction form
    124,010.70/185,868.42 = 86,366.96/x
  3. Step 3: Cross multiply
    124,010.70x = 185,868.42 × 86,366.96
  4. Step 4: Simplify right side
    124,010.70x = 16,052,890,325.01
  5. Step 5: Solve for x
    x = 16,052,890,325.01/124,010.70
  6. Step 6: Final answer
    x = 129,447.63

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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.