Home / 121,138.88-167,170.38-67,423.12

Finding the Fourth Proportional to 121,138.88, 167,170.38 and 67,423.12

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Solution

The fourth proportional to 121,138.88, 167,170.38 and 67,423.12 is: 93,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,138.88 : 167,170.38 = 67,423.12 : x
  2. Step 2: Convert to fraction form
    121,138.88/167,170.38 = 67,423.12/x
  3. Step 3: Cross multiply
    121,138.88x = 167,170.38 × 67,423.12
  4. Step 4: Simplify right side
    121,138.88x = 11,271,148,591.19
  5. Step 5: Solve for x
    x = 11,271,148,591.19/121,138.88
  6. Step 6: Final answer
    x = 93,043.20

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1.5x scale

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.