Home / 107,910.38-149,010.36-67,693.28

Finding the Fourth Proportional to 107,910.38, 149,010.36 and 67,693.28

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Solution

The fourth proportional to 107,910.38, 149,010.36 and 67,693.28 is: 93,475.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,910.38 : 149,010.36 = 67,693.28 : x
  2. Step 2: Convert to fraction form
    107,910.38/149,010.36 = 67,693.28/x
  3. Step 3: Cross multiply
    107,910.38x = 149,010.36 × 67,693.28
  4. Step 4: Simplify right side
    107,910.38x = 10,087,000,022.38
  5. Step 5: Solve for x
    x = 10,087,000,022.38/107,910.38
  6. Step 6: Final answer
    x = 93,475.72

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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.