Home / 121,161.56-167,285.25-75,857.85

Finding the Fourth Proportional to 121,161.56, 167,285.25 and 75,857.85

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Solution

The fourth proportional to 121,161.56, 167,285.25 and 75,857.85 is: 104,735.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,161.56 : 167,285.25 = 75,857.85 : x
  2. Step 2: Convert to fraction form
    121,161.56/167,285.25 = 75,857.85/x
  3. Step 3: Cross multiply
    121,161.56x = 167,285.25 × 75,857.85
  4. Step 4: Simplify right side
    121,161.56x = 12,689,899,401.71
  5. Step 5: Solve for x
    x = 12,689,899,401.71/121,161.56
  6. Step 6: Final answer
    x = 104,735.36

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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.