Home / 155,831.20-215,049.36-88,761.76

Finding the Fourth Proportional to 155,831.20, 215,049.36 and 88,761.76

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Solution

The fourth proportional to 155,831.20, 215,049.36 and 88,761.76 is: 122,492.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,831.20 : 215,049.36 = 88,761.76 : x
  2. Step 2: Convert to fraction form
    155,831.20/215,049.36 = 88,761.76/x
  3. Step 3: Cross multiply
    155,831.20x = 215,049.36 × 88,761.76
  4. Step 4: Simplify right side
    155,831.20x = 19,088,159,680.47
  5. Step 5: Solve for x
    x = 19,088,159,680.47/155,831.20
  6. Step 6: Final answer
    x = 122,492.54

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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.