Home / 121,935.98-168,278.18-68,217.79

Finding the Fourth Proportional to 121,935.98, 168,278.18 and 68,217.79

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Solution

The fourth proportional to 121,935.98, 168,278.18 and 68,217.79 is: 94,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,935.98 : 168,278.18 = 68,217.79 : x
  2. Step 2: Convert to fraction form
    121,935.98/168,278.18 = 68,217.79/x
  3. Step 3: Cross multiply
    121,935.98x = 168,278.18 × 68,217.79
  4. Step 4: Simplify right side
    121,935.98x = 11,479,565,544.82
  5. Step 5: Solve for x
    x = 11,479,565,544.82/121,935.98
  6. Step 6: Final answer
    x = 94,144.20

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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.