Home / 123,511.20-170,445.60-66,922.56

Finding the Fourth Proportional to 123,511.20, 170,445.60 and 66,922.56

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Solution

The fourth proportional to 123,511.20, 170,445.60 and 66,922.56 is: 92,353.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,511.20 : 170,445.60 = 66,922.56 : x
  2. Step 2: Convert to fraction form
    123,511.20/170,445.60 = 66,922.56/x
  3. Step 3: Cross multiply
    123,511.20x = 170,445.60 × 66,922.56
  4. Step 4: Simplify right side
    123,511.20x = 11,406,655,892.74
  5. Step 5: Solve for x
    x = 11,406,655,892.74/123,511.20
  6. Step 6: Final answer
    x = 92,353.21

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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.