Home / 121,587.19-167,792.97-67,139.21

Finding the Fourth Proportional to 121,587.19, 167,792.97 and 67,139.21

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Solution

The fourth proportional to 121,587.19, 167,792.97 and 67,139.21 is: 92,653.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,587.19 : 167,792.97 = 67,139.21 : x
  2. Step 2: Convert to fraction form
    121,587.19/167,792.97 = 67,139.21/x
  3. Step 3: Cross multiply
    121,587.19x = 167,792.97 × 67,139.21
  4. Step 4: Simplify right side
    121,587.19x = 11,265,487,449.35
  5. Step 5: Solve for x
    x = 11,265,487,449.35/121,587.19
  6. Step 6: Final answer
    x = 92,653.58

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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.