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Finding the Fourth Proportional to 137,491.20, 205,891.20 and 109,843.20

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Solution

The fourth proportional to 137,491.20, 205,891.20 and 109,843.20 is: 164,488.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,491.20 : 205,891.20 = 109,843.20 : x
  2. Step 2: Convert to fraction form
    137,491.20/205,891.20 = 109,843.20/x
  3. Step 3: Cross multiply
    137,491.20x = 205,891.20 × 109,843.20
  4. Step 4: Simplify right side
    137,491.20x = 22,615,748,259.84
  5. Step 5: Solve for x
    x = 22,615,748,259.84/137,491.20
  6. Step 6: Final answer
    x = 164,488.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.