Home / 121,881.18-182,799.36-55,305.30

Finding the Fourth Proportional to 121,881.18, 182,799.36 and 55,305.30

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Solution

The fourth proportional to 121,881.18, 182,799.36 and 55,305.30 is: 82,947.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,881.18 : 182,799.36 = 55,305.30 : x
  2. Step 2: Convert to fraction form
    121,881.18/182,799.36 = 55,305.30/x
  3. Step 3: Cross multiply
    121,881.18x = 182,799.36 × 55,305.30
  4. Step 4: Simplify right side
    121,881.18x = 10,109,773,444.61
  5. Step 5: Solve for x
    x = 10,109,773,444.61/121,881.18
  6. Step 6: Final answer
    x = 82,947.78

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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.