Home / 121,427.46-167,561.73-76,103.82

Finding the Fourth Proportional to 121,427.46, 167,561.73 and 76,103.82

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Solution

The fourth proportional to 121,427.46, 167,561.73 and 76,103.82 is: 105,018.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,427.46 : 167,561.73 = 76,103.82 : x
  2. Step 2: Convert to fraction form
    121,427.46/167,561.73 = 76,103.82/x
  3. Step 3: Cross multiply
    121,427.46x = 167,561.73 × 76,103.82
  4. Step 4: Simplify right side
    121,427.46x = 12,752,087,738.81
  5. Step 5: Solve for x
    x = 12,752,087,738.81/121,427.46
  6. Step 6: Final answer
    x = 105,018.15

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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.