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Finding the Fourth Proportional to 136,154.68, 187,900.11 and 75,724.03

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Solution

The fourth proportional to 136,154.68, 187,900.11 and 75,724.03 is: 104,502.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,154.68 : 187,900.11 = 75,724.03 : x
  2. Step 2: Convert to fraction form
    136,154.68/187,900.11 = 75,724.03/x
  3. Step 3: Cross multiply
    136,154.68x = 187,900.11 × 75,724.03
  4. Step 4: Simplify right side
    136,154.68x = 14,228,552,627.14
  5. Step 5: Solve for x
    x = 14,228,552,627.14/136,154.68
  6. Step 6: Final answer
    x = 104,502.85

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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.