Home / 121,117.68-167,145.12-67,408.20

Finding the Fourth Proportional to 121,117.68, 167,145.12 and 67,408.20

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Solution

The fourth proportional to 121,117.68, 167,145.12 and 67,408.20 is: 93,024.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,117.68 : 167,145.12 = 67,408.20 : x
  2. Step 2: Convert to fraction form
    121,117.68/167,145.12 = 67,408.20/x
  3. Step 3: Cross multiply
    121,117.68x = 167,145.12 × 67,408.20
  4. Step 4: Simplify right side
    121,117.68x = 11,266,951,677.98
  5. Step 5: Solve for x
    x = 11,266,951,677.98/121,117.68
  6. Step 6: Final answer
    x = 93,024.83

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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.