Home / 115,356.20-173,034.30-85,831.70

Finding the Fourth Proportional to 115,356.20, 173,034.30 and 85,831.70

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Solution

The fourth proportional to 115,356.20, 173,034.30 and 85,831.70 is: 128,747.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,356.20 : 173,034.30 = 85,831.70 : x
  2. Step 2: Convert to fraction form
    115,356.20/173,034.30 = 85,831.70/x
  3. Step 3: Cross multiply
    115,356.20x = 173,034.30 × 85,831.70
  4. Step 4: Simplify right side
    115,356.20x = 14,851,828,127.31
  5. Step 5: Solve for x
    x = 14,851,828,127.31/115,356.20
  6. Step 6: Final answer
    x = 128,747.55

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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.