Home / 205,235.59-307,863.76-78,831.52

Finding the Fourth Proportional to 205,235.59, 307,863.76 and 78,831.52

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Solution

The fourth proportional to 205,235.59, 307,863.76 and 78,831.52 is: 118,251.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,235.59 : 307,863.76 = 78,831.52 : x
  2. Step 2: Convert to fraction form
    205,235.59/307,863.76 = 78,831.52/x
  3. Step 3: Cross multiply
    205,235.59x = 307,863.76 × 78,831.52
  4. Step 4: Simplify right side
    205,235.59x = 24,269,368,153.72
  5. Step 5: Solve for x
    x = 24,269,368,153.72/205,235.59
  6. Step 6: Final answer
    x = 118,251.27

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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.