Home / 125,837.55-188,760.65-42,720.75

Finding the Fourth Proportional to 125,837.55, 188,760.65 and 42,720.75

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Solution

The fourth proportional to 125,837.55, 188,760.65 and 42,720.75 is: 64,082.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,837.55 : 188,760.65 = 42,720.75 : x
  2. Step 2: Convert to fraction form
    125,837.55/188,760.65 = 42,720.75/x
  3. Step 3: Cross multiply
    125,837.55x = 188,760.65 × 42,720.75
  4. Step 4: Simplify right side
    125,837.55x = 8,063,996,324.88
  5. Step 5: Solve for x
    x = 8,063,996,324.88/125,837.55
  6. Step 6: Final answer
    x = 64,082.59

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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.