Home / 121,436.15-167,593.93-90,755.96

Finding the Fourth Proportional to 121,436.15, 167,593.93 and 90,755.96

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Solution

The fourth proportional to 121,436.15, 167,593.93 and 90,755.96 is: 125,252.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,436.15 : 167,593.93 = 90,755.96 : x
  2. Step 2: Convert to fraction form
    121,436.15/167,593.93 = 90,755.96/x
  3. Step 3: Cross multiply
    121,436.15x = 167,593.93 × 90,755.96
  4. Step 4: Simplify right side
    121,436.15x = 15,210,146,942.46
  5. Step 5: Solve for x
    x = 15,210,146,942.46/121,436.15
  6. Step 6: Final answer
    x = 125,252.22

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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.