Home / 121,092.10-181,746.15-71,109.70

Finding the Fourth Proportional to 121,092.10, 181,746.15 and 71,109.70

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Solution

The fourth proportional to 121,092.10, 181,746.15 and 71,109.70 is: 106,727.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,092.10 : 181,746.15 = 71,109.70 : x
  2. Step 2: Convert to fraction form
    121,092.10/181,746.15 = 71,109.70/x
  3. Step 3: Cross multiply
    121,092.10x = 181,746.15 × 71,109.70
  4. Step 4: Simplify right side
    121,092.10x = 12,923,914,202.66
  5. Step 5: Solve for x
    x = 12,923,914,202.66/121,092.10
  6. Step 6: Final answer
    x = 106,727.97

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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.