Home / 121,400.16-167,472.68-81,123.83

Finding the Fourth Proportional to 121,400.16, 167,472.68 and 81,123.83

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Solution

The fourth proportional to 121,400.16, 167,472.68 and 81,123.83 is: 111,911.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,400.16 : 167,472.68 = 81,123.83 : x
  2. Step 2: Convert to fraction form
    121,400.16/167,472.68 = 81,123.83/x
  3. Step 3: Cross multiply
    121,400.16x = 167,472.68 × 81,123.83
  4. Step 4: Simplify right side
    121,400.16x = 13,586,023,978.98
  5. Step 5: Solve for x
    x = 13,586,023,978.98/121,400.16
  6. Step 6: Final answer
    x = 111,911.09

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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.