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Finding the Fourth Proportional to 109,098.74, 150,521.21 and 66,064.47

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Solution

The fourth proportional to 109,098.74, 150,521.21 and 66,064.47 is: 91,147.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,098.74 : 150,521.21 = 66,064.47 : x
  2. Step 2: Convert to fraction form
    109,098.74/150,521.21 = 66,064.47/x
  3. Step 3: Cross multiply
    109,098.74x = 150,521.21 × 66,064.47
  4. Step 4: Simplify right side
    109,098.74x = 9,944,103,632.09
  5. Step 5: Solve for x
    x = 9,944,103,632.09/109,098.74
  6. Step 6: Final answer
    x = 91,147.74

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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.