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Finding the Fourth Proportional to 147,418.76, 203,423.84 and 86,179.27

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Solution

The fourth proportional to 147,418.76, 203,423.84 and 86,179.27 is: 118,919.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,418.76 : 203,423.84 = 86,179.27 : x
  2. Step 2: Convert to fraction form
    147,418.76/203,423.84 = 86,179.27/x
  3. Step 3: Cross multiply
    147,418.76x = 203,423.84 × 86,179.27
  4. Step 4: Simplify right side
    147,418.76x = 17,530,917,962.90
  5. Step 5: Solve for x
    x = 17,530,917,962.90/147,418.76
  6. Step 6: Final answer
    x = 118,919.18

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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.