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Finding the Fourth Proportional to 212,070.52, 318,149.52 and 71,825.50

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Solution

The fourth proportional to 212,070.52, 318,149.52 and 71,825.50 is: 107,753.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,070.52 : 318,149.52 = 71,825.50 : x
  2. Step 2: Convert to fraction form
    212,070.52/318,149.52 = 71,825.50/x
  3. Step 3: Cross multiply
    212,070.52x = 318,149.52 × 71,825.50
  4. Step 4: Simplify right side
    212,070.52x = 22,851,248,348.76
  5. Step 5: Solve for x
    x = 22,851,248,348.76/212,070.52
  6. Step 6: Final answer
    x = 107,753.06

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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.