Home / 123,589.08-170,462.34-81,132.12

Finding the Fourth Proportional to 123,589.08, 170,462.34 and 81,132.12

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Solution

The fourth proportional to 123,589.08, 170,462.34 and 81,132.12 is: 111,902.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,589.08 : 170,462.34 = 81,132.12 : x
  2. Step 2: Convert to fraction form
    123,589.08/170,462.34 = 81,132.12/x
  3. Step 3: Cross multiply
    123,589.08x = 170,462.34 × 81,132.12
  4. Step 4: Simplify right side
    123,589.08x = 13,829,971,024.36
  5. Step 5: Solve for x
    x = 13,829,971,024.36/123,589.08
  6. Step 6: Final answer
    x = 111,902.86

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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.