Home / 128,881.30-193,224.68-84,519.22

Finding the Fourth Proportional to 128,881.30, 193,224.68 and 84,519.22

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Solution

The fourth proportional to 128,881.30, 193,224.68 and 84,519.22 is: 126,715.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,881.30 : 193,224.68 = 84,519.22 : x
  2. Step 2: Convert to fraction form
    128,881.30/193,224.68 = 84,519.22/x
  3. Step 3: Cross multiply
    128,881.30x = 193,224.68 × 84,519.22
  4. Step 4: Simplify right side
    128,881.30x = 16,331,199,238.35
  5. Step 5: Solve for x
    x = 16,331,199,238.35/128,881.30
  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.