Home / 128,881.29-193,224.69-84,519.21

Finding the Fourth Proportional to 128,881.29, 193,224.69 and 84,519.21

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Solution

The fourth proportional to 128,881.29, 193,224.69 and 84,519.21 is: 126,715.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,881.29 : 193,224.69 = 84,519.21 : x
  2. Step 2: Convert to fraction form
    128,881.29/193,224.69 = 84,519.21/x
  3. Step 3: Cross multiply
    128,881.29x = 193,224.69 × 84,519.21
  4. Step 4: Simplify right side
    128,881.29x = 16,331,198,151.29
  5. Step 5: Solve for x
    x = 16,331,198,151.29/128,881.29
  6. Step 6: Final answer
    x = 126,715.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.