Home / 121,138.31-167,169.17-67,423.34

Finding the Fourth Proportional to 121,138.31, 167,169.17 and 67,423.34

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Solution

The fourth proportional to 121,138.31, 167,169.17 and 67,423.34 is: 93,043.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,138.31 : 167,169.17 = 67,423.34 : x
  2. Step 2: Convert to fraction form
    121,138.31/167,169.17 = 67,423.34/x
  3. Step 3: Cross multiply
    121,138.31x = 167,169.17 × 67,423.34
  4. Step 4: Simplify right side
    121,138.31x = 11,271,102,613.47
  5. Step 5: Solve for x
    x = 11,271,102,613.47/121,138.31
  6. Step 6: Final answer
    x = 93,043.26

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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.