Home / 121,405.28-182,160.40-65,179.76

Finding the Fourth Proportional to 121,405.28, 182,160.40 and 65,179.76

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Solution

The fourth proportional to 121,405.28, 182,160.40 and 65,179.76 is: 97,797.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,405.28 : 182,160.40 = 65,179.76 : x
  2. Step 2: Convert to fraction form
    121,405.28/182,160.40 = 65,179.76/x
  3. Step 3: Cross multiply
    121,405.28x = 182,160.40 × 65,179.76
  4. Step 4: Simplify right side
    121,405.28x = 11,873,171,153.50
  5. Step 5: Solve for x
    x = 11,873,171,153.50/121,405.28
  6. Step 6: Final answer
    x = 97,797.82

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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.