Home / 128,242.28-192,402.30-61,663.52

Finding the Fourth Proportional to 128,242.28, 192,402.30 and 61,663.52

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Solution

The fourth proportional to 128,242.28, 192,402.30 and 61,663.52 is: 92,513.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,242.28 : 192,402.30 = 61,663.52 : x
  2. Step 2: Convert to fraction form
    128,242.28/192,402.30 = 61,663.52/x
  3. Step 3: Cross multiply
    128,242.28x = 192,402.30 × 61,663.52
  4. Step 4: Simplify right side
    128,242.28x = 11,864,203,074.10
  5. Step 5: Solve for x
    x = 11,864,203,074.10/128,242.28
  6. Step 6: Final answer
    x = 92,513.97

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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.