Home / 123,403.26-170,298.15-74,991.42

Finding the Fourth Proportional to 123,403.26, 170,298.15 and 74,991.42

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Solution

The fourth proportional to 123,403.26, 170,298.15 and 74,991.42 is: 103,489.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,403.26 : 170,298.15 = 74,991.42 : x
  2. Step 2: Convert to fraction form
    123,403.26/170,298.15 = 74,991.42/x
  3. Step 3: Cross multiply
    123,403.26x = 170,298.15 × 74,991.42
  4. Step 4: Simplify right side
    123,403.26x = 12,770,900,091.87
  5. Step 5: Solve for x
    x = 12,770,900,091.87/123,403.26
  6. Step 6: Final answer
    x = 103,489.16

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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.