Home / 121,144.68-167,146.14-72,734.28

Finding the Fourth Proportional to 121,144.68, 167,146.14 and 72,734.28

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Solution

The fourth proportional to 121,144.68, 167,146.14 and 72,734.28 is: 100,353.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,144.68 : 167,146.14 = 72,734.28 : x
  2. Step 2: Convert to fraction form
    121,144.68/167,146.14 = 72,734.28/x
  3. Step 3: Cross multiply
    121,144.68x = 167,146.14 × 72,734.28
  4. Step 4: Simplify right side
    121,144.68x = 12,157,254,147.68
  5. Step 5: Solve for x
    x = 12,157,254,147.68/121,144.68
  6. Step 6: Final answer
    x = 100,353.18

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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.