Home / 109,009.42-150,428.16-63,691.60

Finding the Fourth Proportional to 109,009.42, 150,428.16 and 63,691.60

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Solution

The fourth proportional to 109,009.42, 150,428.16 and 63,691.60 is: 87,891.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,009.42 : 150,428.16 = 63,691.60 : x
  2. Step 2: Convert to fraction form
    109,009.42/150,428.16 = 63,691.60/x
  3. Step 3: Cross multiply
    109,009.42x = 150,428.16 × 63,691.60
  4. Step 4: Simplify right side
    109,009.42x = 9,581,010,195.46
  5. Step 5: Solve for x
    x = 9,581,010,195.46/109,009.42
  6. Step 6: Final answer
    x = 87,891.58

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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.