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Finding the Fourth Proportional to 136,775.41, 188,781.47 and 88,945.45

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Solution

The fourth proportional to 136,775.41, 188,781.47 and 88,945.45 is: 122,765.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,775.41 : 188,781.47 = 88,945.45 : x
  2. Step 2: Convert to fraction form
    136,775.41/188,781.47 = 88,945.45/x
  3. Step 3: Cross multiply
    136,775.41x = 188,781.47 × 88,945.45
  4. Step 4: Simplify right side
    136,775.41x = 16,791,252,800.81
  5. Step 5: Solve for x
    x = 16,791,252,800.81/136,775.41
  6. Step 6: Final answer
    x = 122,765.14

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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.