Home / 121,863.16-168,175.74-68,148.04

Finding the Fourth Proportional to 121,863.16, 168,175.74 and 68,148.04

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Solution

The fourth proportional to 121,863.16, 168,175.74 and 68,148.04 is: 94,046.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,863.16 : 168,175.74 = 68,148.04 : x
  2. Step 2: Convert to fraction form
    121,863.16/168,175.74 = 68,148.04/x
  3. Step 3: Cross multiply
    121,863.16x = 168,175.74 × 68,148.04
  4. Step 4: Simplify right side
    121,863.16x = 11,460,847,056.55
  5. Step 5: Solve for x
    x = 11,460,847,056.55/121,863.16
  6. Step 6: Final answer
    x = 94,046.86

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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.