Home / 128,242.34-192,366.77-60,758.55

Finding the Fourth Proportional to 128,242.34, 192,366.77 and 60,758.55

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Solution

The fourth proportional to 128,242.34, 192,366.77 and 60,758.55 is: 91,139.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,242.34 : 192,366.77 = 60,758.55 : x
  2. Step 2: Convert to fraction form
    128,242.34/192,366.77 = 60,758.55/x
  3. Step 3: Cross multiply
    128,242.34x = 192,366.77 × 60,758.55
  4. Step 4: Simplify right side
    128,242.34x = 11,687,925,709.59
  5. Step 5: Solve for x
    x = 11,687,925,709.59/128,242.34
  6. Step 6: Final answer
    x = 91,139.37

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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.