Home / 121,489.23-167,655.61-67,778.33

Finding the Fourth Proportional to 121,489.23, 167,655.61 and 67,778.33

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Solution

The fourth proportional to 121,489.23, 167,655.61 and 67,778.33 is: 93,534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,489.23 : 167,655.61 = 67,778.33 : x
  2. Step 2: Convert to fraction form
    121,489.23/167,655.61 = 67,778.33/x
  3. Step 3: Cross multiply
    121,489.23x = 167,655.61 × 67,778.33
  4. Step 4: Simplify right side
    121,489.23x = 11,363,417,260.93
  5. Step 5: Solve for x
    x = 11,363,417,260.93/121,489.23
  6. Step 6: Final answer
    x = 93,534.36

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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.