Home / 109,670.28-151,343.82-61,920.78

Finding the Fourth Proportional to 109,670.28, 151,343.82 and 61,920.78

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Solution

The fourth proportional to 109,670.28, 151,343.82 and 61,920.78 is: 85,450.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,670.28 : 151,343.82 = 61,920.78 : x
  2. Step 2: Convert to fraction form
    109,670.28/151,343.82 = 61,920.78/x
  3. Step 3: Cross multiply
    109,670.28x = 151,343.82 × 61,920.78
  4. Step 4: Simplify right side
    109,670.28x = 9,371,327,382.58
  5. Step 5: Solve for x
    x = 9,371,327,382.58/109,670.28
  6. Step 6: Final answer
    x = 85,450.02

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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.