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Finding the Fourth Proportional to 113,189.25, 156,332.39 and 75,397.89

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Solution

The fourth proportional to 113,189.25, 156,332.39 and 75,397.89 is: 104,136.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,189.25 : 156,332.39 = 75,397.89 : x
  2. Step 2: Convert to fraction form
    113,189.25/156,332.39 = 75,397.89/x
  3. Step 3: Cross multiply
    113,189.25x = 156,332.39 × 75,397.89
  4. Step 4: Simplify right side
    113,189.25x = 11,787,131,967.67
  5. Step 5: Solve for x
    x = 11,787,131,967.67/113,189.25
  6. Step 6: Final answer
    x = 104,136.50

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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.