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Finding the Fourth Proportional to 161,772.80, 242,659.20 and 43,456.10

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Solution

The fourth proportional to 161,772.80, 242,659.20 and 43,456.10 is: 65,184.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,772.80 : 242,659.20 = 43,456.10 : x
  2. Step 2: Convert to fraction form
    161,772.80/242,659.20 = 43,456.10/x
  3. Step 3: Cross multiply
    161,772.80x = 242,659.20 × 43,456.10
  4. Step 4: Simplify right side
    161,772.80x = 10,545,022,461.12
  5. Step 5: Solve for x
    x = 10,545,022,461.12/161,772.80
  6. Step 6: Final answer
    x = 65,184.15

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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.