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Finding the Fourth Proportional to 161,179.40, 241,696.20 and 72,387.20

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Solution

The fourth proportional to 161,179.40, 241,696.20 and 72,387.20 is: 108,548.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,179.40 : 241,696.20 = 72,387.20 : x
  2. Step 2: Convert to fraction form
    161,179.40/241,696.20 = 72,387.20/x
  3. Step 3: Cross multiply
    161,179.40x = 241,696.20 × 72,387.20
  4. Step 4: Simplify right side
    161,179.40x = 17,495,711,168.64
  5. Step 5: Solve for x
    x = 17,495,711,168.64/161,179.40
  6. Step 6: Final answer
    x = 108,548.06

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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.