Home / 123,501.50-170,432.24-66,912.88

Finding the Fourth Proportional to 123,501.50, 170,432.24 and 66,912.88

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Solution

The fourth proportional to 123,501.50, 170,432.24 and 66,912.88 is: 92,339.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,501.50 : 170,432.24 = 66,912.88 : x
  2. Step 2: Convert to fraction form
    123,501.50/170,432.24 = 66,912.88/x
  3. Step 3: Cross multiply
    123,501.50x = 170,432.24 × 66,912.88
  4. Step 4: Simplify right side
    123,501.50x = 11,404,112,023.25
  5. Step 5: Solve for x
    x = 11,404,112,023.25/123,501.50
  6. Step 6: Final answer
    x = 92,339.87

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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.