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Finding the Fourth Proportional to 113,672.85, 156,869.31 and 62,687.40

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Solution

The fourth proportional to 113,672.85, 156,869.31 and 62,687.40 is: 86,509.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,672.85 : 156,869.31 = 62,687.40 : x
  2. Step 2: Convert to fraction form
    113,672.85/156,869.31 = 62,687.40/x
  3. Step 3: Cross multiply
    113,672.85x = 156,869.31 × 62,687.40
  4. Step 4: Simplify right side
    113,672.85x = 9,833,729,183.69
  5. Step 5: Solve for x
    x = 9,833,729,183.69/113,672.85
  6. Step 6: Final answer
    x = 86,509.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.