Home / 128,240.42-192,363.91-60,756.65

Finding the Fourth Proportional to 128,240.42, 192,363.91 and 60,756.65

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Solution

The fourth proportional to 128,240.42, 192,363.91 and 60,756.65 is: 91,136.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,240.42 : 192,363.91 = 60,756.65 : x
  2. Step 2: Convert to fraction form
    128,240.42/192,363.91 = 60,756.65/x
  3. Step 3: Cross multiply
    128,240.42x = 192,363.91 × 60,756.65
  4. Step 4: Simplify right side
    128,240.42x = 11,687,386,360.16
  5. Step 5: Solve for x
    x = 11,687,386,360.16/128,240.42
  6. Step 6: Final answer
    x = 91,136.53

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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.