Home / 121,278.78-167,364.81-67,563.92

Finding the Fourth Proportional to 121,278.78, 167,364.81 and 67,563.92

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Solution

The fourth proportional to 121,278.78, 167,364.81 and 67,563.92 is: 93,238.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,278.78 : 167,364.81 = 67,563.92 : x
  2. Step 2: Convert to fraction form
    121,278.78/167,364.81 = 67,563.92/x
  3. Step 3: Cross multiply
    121,278.78x = 167,364.81 × 67,563.92
  4. Step 4: Simplify right side
    121,278.78x = 11,307,823,052.07
  5. Step 5: Solve for x
    x = 11,307,823,052.07/121,278.78
  6. Step 6: Final answer
    x = 93,238.27

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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.