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Finding the Fourth Proportional to 123,367.68, 170,247.60 and 66,779.28

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Solution

The fourth proportional to 123,367.68, 170,247.60 and 66,779.28 is: 92,155.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,367.68 : 170,247.60 = 66,779.28 : x
  2. Step 2: Convert to fraction form
    123,367.68/170,247.60 = 66,779.28/x
  3. Step 3: Cross multiply
    123,367.68x = 170,247.60 × 66,779.28
  4. Step 4: Simplify right side
    123,367.68x = 11,369,012,149.73
  5. Step 5: Solve for x
    x = 11,369,012,149.73/123,367.68
  6. Step 6: Final answer
    x = 92,155.52

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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.