Home / 121,636.62-182,380.40-42,759.90

Finding the Fourth Proportional to 121,636.62, 182,380.40 and 42,759.90

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Solution

The fourth proportional to 121,636.62, 182,380.40 and 42,759.90 is: 64,113.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,636.62 : 182,380.40 = 42,759.90 : x
  2. Step 2: Convert to fraction form
    121,636.62/182,380.40 = 42,759.90/x
  3. Step 3: Cross multiply
    121,636.62x = 182,380.40 × 42,759.90
  4. Step 4: Simplify right side
    121,636.62x = 7,798,567,665.96
  5. Step 5: Solve for x
    x = 7,798,567,665.96/121,636.62
  6. Step 6: Final answer
    x = 64,113.65

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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.