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Finding the Fourth Proportional to 123,245.93, 170,079.40 and 66,657.30

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Solution

The fourth proportional to 123,245.93, 170,079.40 and 66,657.30 is: 91,987.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,245.93 : 170,079.40 = 66,657.30 : x
  2. Step 2: Convert to fraction form
    123,245.93/170,079.40 = 66,657.30/x
  3. Step 3: Cross multiply
    123,245.93x = 170,079.40 × 66,657.30
  4. Step 4: Simplify right side
    123,245.93x = 11,337,034,095.24
  5. Step 5: Solve for x
    x = 11,337,034,095.24/123,245.93
  6. Step 6: Final answer
    x = 91,987.09

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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.