Home / 109,728.92-151,429.02-61,984.28

Finding the Fourth Proportional to 109,728.92, 151,429.02 and 61,984.28

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Solution

The fourth proportional to 109,728.92, 151,429.02 and 61,984.28 is: 85,540.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,728.92 : 151,429.02 = 61,984.28 : x
  2. Step 2: Convert to fraction form
    109,728.92/151,429.02 = 61,984.28/x
  3. Step 3: Cross multiply
    109,728.92x = 151,429.02 × 61,984.28
  4. Step 4: Simplify right side
    109,728.92x = 9,386,218,775.81
  5. Step 5: Solve for x
    x = 9,386,218,775.81/109,728.92
  6. Step 6: Final answer
    x = 85,540.06

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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.