Home / 124,278.12-171,504-67,689.72

Finding the Fourth Proportional to 124,278.12, 171,504 and 67,689.72

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Solution

The fourth proportional to 124,278.12, 171,504 and 67,689.72 is: 93,411.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,278.12 : 171,504 = 67,689.72 : x
  2. Step 2: Convert to fraction form
    124,278.12/171,504 = 67,689.72/x
  3. Step 3: Cross multiply
    124,278.12x = 171,504 × 67,689.72
  4. Step 4: Simplify right side
    124,278.12x = 11,609,057,738.88
  5. Step 5: Solve for x
    x = 11,609,057,738.88/124,278.12
  6. Step 6: Final answer
    x = 93,411.92

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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.