Home / 156,264.30-215,629.29-87,340.86

Finding the Fourth Proportional to 156,264.30, 215,629.29 and 87,340.86

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Solution

The fourth proportional to 156,264.30, 215,629.29 and 87,340.86 is: 120,521.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,264.30 : 215,629.29 = 87,340.86 : x
  2. Step 2: Convert to fraction form
    156,264.30/215,629.29 = 87,340.86/x
  3. Step 3: Cross multiply
    156,264.30x = 215,629.29 × 87,340.86
  4. Step 4: Simplify right side
    156,264.30x = 18,833,247,629.79
  5. Step 5: Solve for x
    x = 18,833,247,629.79/156,264.30
  6. Step 6: Final answer
    x = 120,521.75

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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.