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Finding the Fourth Proportional to 136,347.59, 188,168.72 and 82,637.70

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Solution

The fourth proportional to 136,347.59, 188,168.72 and 82,637.70 is: 114,045.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,347.59 : 188,168.72 = 82,637.70 : x
  2. Step 2: Convert to fraction form
    136,347.59/188,168.72 = 82,637.70/x
  3. Step 3: Cross multiply
    136,347.59x = 188,168.72 × 82,637.70
  4. Step 4: Simplify right side
    136,347.59x = 15,549,829,819.56
  5. Step 5: Solve for x
    x = 15,549,829,819.56/136,347.59
  6. Step 6: Final answer
    x = 114,045.51

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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.