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Finding the Fourth Proportional to 109,251.81, 150,770.31 and 61,506.86

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Solution

The fourth proportional to 109,251.81, 150,770.31 and 61,506.86 is: 84,881.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,251.81 : 150,770.31 = 61,506.86 : x
  2. Step 2: Convert to fraction form
    109,251.81/150,770.31 = 61,506.86/x
  3. Step 3: Cross multiply
    109,251.81x = 150,770.31 × 61,506.86
  4. Step 4: Simplify right side
    109,251.81x = 9,273,407,595.48
  5. Step 5: Solve for x
    x = 9,273,407,595.48/109,251.81
  6. Step 6: Final answer
    x = 84,881.04

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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.