Home / 125,616.20-188,222.70-66,374.60

Finding the Fourth Proportional to 125,616.20, 188,222.70 and 66,374.60

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Solution

The fourth proportional to 125,616.20, 188,222.70 and 66,374.60 is: 99,455.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,616.20 : 188,222.70 = 66,374.60 : x
  2. Step 2: Convert to fraction form
    125,616.20/188,222.70 = 66,374.60/x
  3. Step 3: Cross multiply
    125,616.20x = 188,222.70 × 66,374.60
  4. Step 4: Simplify right side
    125,616.20x = 12,493,206,423.42
  5. Step 5: Solve for x
    x = 12,493,206,423.42/125,616.20
  6. Step 6: Final answer
    x = 99,455.38

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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.