Home / 156,478.32-215,970.71-102,761.96

Finding the Fourth Proportional to 156,478.32, 215,970.71 and 102,761.96

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Solution

The fourth proportional to 156,478.32, 215,970.71 and 102,761.96 is: 141,831.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,478.32 : 215,970.71 = 102,761.96 : x
  2. Step 2: Convert to fraction form
    156,478.32/215,970.71 = 102,761.96/x
  3. Step 3: Cross multiply
    156,478.32x = 215,970.71 × 102,761.96
  4. Step 4: Simplify right side
    156,478.32x = 22,193,571,868.53
  5. Step 5: Solve for x
    x = 22,193,571,868.53/156,478.32
  6. Step 6: Final answer
    x = 141,831.61

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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.