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Finding the Fourth Proportional to 123,245.82, 170,079.35 and 66,657.20

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Solution

The fourth proportional to 123,245.82, 170,079.35 and 66,657.20 is: 91,987.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,245.82 : 170,079.35 = 66,657.20 : x
  2. Step 2: Convert to fraction form
    123,245.82/170,079.35 = 66,657.20/x
  3. Step 3: Cross multiply
    123,245.82x = 170,079.35 × 66,657.20
  4. Step 4: Simplify right side
    123,245.82x = 11,337,013,248.82
  5. Step 5: Solve for x
    x = 11,337,013,248.82/123,245.82
  6. Step 6: Final answer
    x = 91,987.00

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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.