Home / 100,831.42-139,147.27-62,576.70

Finding the Fourth Proportional to 100,831.42, 139,147.27 and 62,576.70

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Solution

The fourth proportional to 100,831.42, 139,147.27 and 62,576.70 is: 86,355.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,831.42 : 139,147.27 = 62,576.70 : x
  2. Step 2: Convert to fraction form
    100,831.42/139,147.27 = 62,576.70/x
  3. Step 3: Cross multiply
    100,831.42x = 139,147.27 × 62,576.70
  4. Step 4: Simplify right side
    100,831.42x = 8,707,376,970.61
  5. Step 5: Solve for x
    x = 8,707,376,970.61/100,831.42
  6. Step 6: Final answer
    x = 86,355.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.