Home / 123,211.26-170,031.42-66,622.50

Finding the Fourth Proportional to 123,211.26, 170,031.42 and 66,622.50

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Solution

The fourth proportional to 123,211.26, 170,031.42 and 66,622.50 is: 91,938.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,211.26 : 170,031.42 = 66,622.50 : x
  2. Step 2: Convert to fraction form
    123,211.26/170,031.42 = 66,622.50/x
  3. Step 3: Cross multiply
    123,211.26x = 170,031.42 × 66,622.50
  4. Step 4: Simplify right side
    123,211.26x = 11,327,918,278.95
  5. Step 5: Solve for x
    x = 11,327,918,278.95/123,211.26
  6. Step 6: Final answer
    x = 91,938.99

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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.