Home / 121,961.17-182,941.78-80,398.45

Finding the Fourth Proportional to 121,961.17, 182,941.78 and 80,398.45

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Solution

The fourth proportional to 121,961.17, 182,941.78 and 80,398.45 is: 120,597.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,961.17 : 182,941.78 = 80,398.45 : x
  2. Step 2: Convert to fraction form
    121,961.17/182,941.78 = 80,398.45/x
  3. Step 3: Cross multiply
    121,961.17x = 182,941.78 × 80,398.45
  4. Step 4: Simplify right side
    121,961.17x = 14,708,235,552.24
  5. Step 5: Solve for x
    x = 14,708,235,552.24/121,961.17
  6. Step 6: Final answer
    x = 120,597.69

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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.