Home / 121,778.88-182,686.56-42,879.20

Finding the Fourth Proportional to 121,778.88, 182,686.56 and 42,879.20

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Solution

The fourth proportional to 121,778.88, 182,686.56 and 42,879.20 is: 64,325.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,778.88 : 182,686.56 = 42,879.20 : x
  2. Step 2: Convert to fraction form
    121,778.88/182,686.56 = 42,879.20/x
  3. Step 3: Cross multiply
    121,778.88x = 182,686.56 × 42,879.20
  4. Step 4: Simplify right side
    121,778.88x = 7,833,453,543.55
  5. Step 5: Solve for x
    x = 7,833,453,543.55/121,778.88
  6. Step 6: Final answer
    x = 64,325.22

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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.