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Finding the Fourth Proportional to 143,354.88, 197,823.60 and 79,691.04

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Solution

The fourth proportional to 143,354.88, 197,823.60 and 79,691.04 is: 109,970.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,354.88 : 197,823.60 = 79,691.04 : x
  2. Step 2: Convert to fraction form
    143,354.88/197,823.60 = 79,691.04/x
  3. Step 3: Cross multiply
    143,354.88x = 197,823.60 × 79,691.04
  4. Step 4: Simplify right side
    143,354.88x = 15,764,768,420.54
  5. Step 5: Solve for x
    x = 15,764,768,420.54/143,354.88
  6. Step 6: Final answer
    x = 109,970.23

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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.