Home / 121,531.19-167,712.73-67,815.63

Finding the Fourth Proportional to 121,531.19, 167,712.73 and 67,815.63

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Solution

The fourth proportional to 121,531.19, 167,712.73 and 67,815.63 is: 93,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,531.19 : 167,712.73 = 67,815.63 : x
  2. Step 2: Convert to fraction form
    121,531.19/167,712.73 = 67,815.63/x
  3. Step 3: Cross multiply
    121,531.19x = 167,712.73 × 67,815.63
  4. Step 4: Simplify right side
    121,531.19x = 11,373,544,274.43
  5. Step 5: Solve for x
    x = 11,373,544,274.43/121,531.19
  6. Step 6: Final answer
    x = 93,585.40

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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.