Home / 123,285.28-170,134.86-66,697.84

Finding the Fourth Proportional to 123,285.28, 170,134.86 and 66,697.84

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Solution

The fourth proportional to 123,285.28, 170,134.86 and 66,697.84 is: 92,043.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,285.28 : 170,134.86 = 66,697.84 : x
  2. Step 2: Convert to fraction form
    123,285.28/170,134.86 = 66,697.84/x
  3. Step 3: Cross multiply
    123,285.28x = 170,134.86 × 66,697.84
  4. Step 4: Simplify right side
    123,285.28x = 11,347,627,670.70
  5. Step 5: Solve for x
    x = 11,347,627,670.70/123,285.28
  6. Step 6: Final answer
    x = 92,043.65

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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.