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Finding the Fourth Proportional to 158,329.27, 218,494.72 and 85,732.95

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Solution

The fourth proportional to 158,329.27, 218,494.72 and 85,732.95 is: 118,311.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,329.27 : 218,494.72 = 85,732.95 : x
  2. Step 2: Convert to fraction form
    158,329.27/218,494.72 = 85,732.95/x
  3. Step 3: Cross multiply
    158,329.27x = 218,494.72 × 85,732.95
  4. Step 4: Simplify right side
    158,329.27x = 18,732,196,905.02
  5. Step 5: Solve for x
    x = 18,732,196,905.02/158,329.27
  6. Step 6: Final answer
    x = 118,311.65

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1.5x scale

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.