Home / 125,622.20-188,433.30-72,478.10

Finding the Fourth Proportional to 125,622.20, 188,433.30 and 72,478.10

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Solution

The fourth proportional to 125,622.20, 188,433.30 and 72,478.10 is: 108,717.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,622.20 : 188,433.30 = 72,478.10 : x
  2. Step 2: Convert to fraction form
    125,622.20/188,433.30 = 72,478.10/x
  3. Step 3: Cross multiply
    125,622.20x = 188,433.30 × 72,478.10
  4. Step 4: Simplify right side
    125,622.20x = 13,657,287,560.73
  5. Step 5: Solve for x
    x = 13,657,287,560.73/125,622.20
  6. Step 6: Final answer
    x = 108,717.15

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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.