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Finding the Fourth Proportional to 136,086.66, 187,799.40 and 75,655.38

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Solution

The fourth proportional to 136,086.66, 187,799.40 and 75,655.38 is: 104,404.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,086.66 : 187,799.40 = 75,655.38 : x
  2. Step 2: Convert to fraction form
    136,086.66/187,799.40 = 75,655.38/x
  3. Step 3: Cross multiply
    136,086.66x = 187,799.40 × 75,655.38
  4. Step 4: Simplify right side
    136,086.66x = 14,208,034,970.77
  5. Step 5: Solve for x
    x = 14,208,034,970.77/136,086.66
  6. Step 6: Final answer
    x = 104,404.32

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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.