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Finding the Fourth Proportional to 114,599.80, 171,948.30 and 72,512.20

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Solution

The fourth proportional to 114,599.80, 171,948.30 and 72,512.20 is: 108,799.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,599.80 : 171,948.30 = 72,512.20 : x
  2. Step 2: Convert to fraction form
    114,599.80/171,948.30 = 72,512.20/x
  3. Step 3: Cross multiply
    114,599.80x = 171,948.30 × 72,512.20
  4. Step 4: Simplify right side
    114,599.80x = 12,468,349,519.26
  5. Step 5: Solve for x
    x = 12,468,349,519.26/114,599.80
  6. Step 6: Final answer
    x = 108,799.05

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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.