Home / 121,425.30-167,606.28-81,148.05

Finding the Fourth Proportional to 121,425.30, 167,606.28 and 81,148.05

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Solution

The fourth proportional to 121,425.30, 167,606.28 and 81,148.05 is: 112,010.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,425.30 : 167,606.28 = 81,148.05 : x
  2. Step 2: Convert to fraction form
    121,425.30/167,606.28 = 81,148.05/x
  3. Step 3: Cross multiply
    121,425.30x = 167,606.28 × 81,148.05
  4. Step 4: Simplify right side
    121,425.30x = 13,600,922,789.75
  5. Step 5: Solve for x
    x = 13,600,922,789.75/121,425.30
  6. Step 6: Final answer
    x = 112,010.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.