Home / 121,569.18-167,748.72-67,849.20

Finding the Fourth Proportional to 121,569.18, 167,748.72 and 67,849.20

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Solution

The fourth proportional to 121,569.18, 167,748.72 and 67,849.20 is: 93,622.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,569.18 : 167,748.72 = 67,849.20 : x
  2. Step 2: Convert to fraction form
    121,569.18/167,748.72 = 67,849.20/x
  3. Step 3: Cross multiply
    121,569.18x = 167,748.72 × 67,849.20
  4. Step 4: Simplify right side
    121,569.18x = 11,381,616,453.02
  5. Step 5: Solve for x
    x = 11,381,616,453.02/121,569.18
  6. Step 6: Final answer
    x = 93,622.55

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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.