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Finding the Fourth Proportional to 136,340.66, 188,149.64 and 75,909.74

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Solution

The fourth proportional to 136,340.66, 188,149.64 and 75,909.74 is: 104,755.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,340.66 : 188,149.64 = 75,909.74 : x
  2. Step 2: Convert to fraction form
    136,340.66/188,149.64 = 75,909.74/x
  3. Step 3: Cross multiply
    136,340.66x = 188,149.64 × 75,909.74
  4. Step 4: Simplify right side
    136,340.66x = 14,282,390,253.49
  5. Step 5: Solve for x
    x = 14,282,390,253.49/136,340.66
  6. Step 6: Final answer
    x = 104,755.18

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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.