Home / 123,331.74-170,082.30-81,865.40

Finding the Fourth Proportional to 123,331.74, 170,082.30 and 81,865.40

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Solution

The fourth proportional to 123,331.74, 170,082.30 and 81,865.40 is: 112,897.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,331.74 : 170,082.30 = 81,865.40 : x
  2. Step 2: Convert to fraction form
    123,331.74/170,082.30 = 81,865.40/x
  3. Step 3: Cross multiply
    123,331.74x = 170,082.30 × 81,865.40
  4. Step 4: Simplify right side
    123,331.74x = 13,923,855,522.42
  5. Step 5: Solve for x
    x = 13,923,855,522.42/123,331.74
  6. Step 6: Final answer
    x = 112,897.58

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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.