Home / 123,285.28-170,134.08-66,697.12

Finding the Fourth Proportional to 123,285.28, 170,134.08 and 66,697.12

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Solution

The fourth proportional to 123,285.28, 170,134.08 and 66,697.12 is: 92,042.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,285.28 : 170,134.08 = 66,697.12 : x
  2. Step 2: Convert to fraction form
    123,285.28/170,134.08 = 66,697.12/x
  3. Step 3: Cross multiply
    123,285.28x = 170,134.08 × 66,697.12
  4. Step 4: Simplify right side
    123,285.28x = 11,347,453,149.85
  5. Step 5: Solve for x
    x = 11,347,453,149.85/123,285.28
  6. Step 6: Final answer
    x = 92,042.24

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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.