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Finding the Fourth Proportional to 113,676, 156,870.80 and 62,693.44

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Solution

The fourth proportional to 113,676, 156,870.80 and 62,693.44 is: 86,515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,676 : 156,870.80 = 62,693.44 : x
  2. Step 2: Convert to fraction form
    113,676/156,870.80 = 62,693.44/x
  3. Step 3: Cross multiply
    113,676x = 156,870.80 × 62,693.44
  4. Step 4: Simplify right side
    113,676x = 9,834,770,087.55
  5. Step 5: Solve for x
    x = 9,834,770,087.55/113,676
  6. Step 6: Final answer
    x = 86,515.80

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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.