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Finding the Fourth Proportional to 122,311.53, 168,773.60 and 67,862.83

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Solution

The fourth proportional to 122,311.53, 168,773.60 and 67,862.83 is: 93,641.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,311.53 : 168,773.60 = 67,862.83 : x
  2. Step 2: Convert to fraction form
    122,311.53/168,773.60 = 67,862.83/x
  3. Step 3: Cross multiply
    122,311.53x = 168,773.60 × 67,862.83
  4. Step 4: Simplify right side
    122,311.53x = 11,453,453,281.42
  5. Step 5: Solve for x
    x = 11,453,453,281.42/122,311.53
  6. Step 6: Final answer
    x = 93,641.65

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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.