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Finding the Fourth Proportional to 124,640.10, 186,938.55 and 45,713.70

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Solution

The fourth proportional to 124,640.10, 186,938.55 and 45,713.70 is: 68,562.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,640.10 : 186,938.55 = 45,713.70 : x
  2. Step 2: Convert to fraction form
    124,640.10/186,938.55 = 45,713.70/x
  3. Step 3: Cross multiply
    124,640.10x = 186,938.55 × 45,713.70
  4. Step 4: Simplify right side
    124,640.10x = 8,545,652,793.14
  5. Step 5: Solve for x
    x = 8,545,652,793.14/124,640.10
  6. Step 6: Final answer
    x = 68,562.63

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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.