Home / 121,436.79-181,995.26-68,127.75

Finding the Fourth Proportional to 121,436.79, 181,995.26 and 68,127.75

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Solution

The fourth proportional to 121,436.79, 181,995.26 and 68,127.75 is: 102,101.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,436.79 : 181,995.26 = 68,127.75 : x
  2. Step 2: Convert to fraction form
    121,436.79/181,995.26 = 68,127.75/x
  3. Step 3: Cross multiply
    121,436.79x = 181,995.26 × 68,127.75
  4. Step 4: Simplify right side
    121,436.79x = 12,398,927,233.83
  5. Step 5: Solve for x
    x = 12,398,927,233.83/121,436.79
  6. Step 6: Final answer
    x = 102,101.91

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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.