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Finding the Fourth Proportional to 173,719.80, 260,666.10 and 68,542.20

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Solution

The fourth proportional to 173,719.80, 260,666.10 and 68,542.20 is: 102,847.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,719.80 : 260,666.10 = 68,542.20 : x
  2. Step 2: Convert to fraction form
    173,719.80/260,666.10 = 68,542.20/x
  3. Step 3: Cross multiply
    173,719.80x = 260,666.10 × 68,542.20
  4. Step 4: Simplify right side
    173,719.80x = 17,866,627,959.42
  5. Step 5: Solve for x
    x = 17,866,627,959.42/173,719.80
  6. Step 6: Final answer
    x = 102,847.39

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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.