Home / 156,265.30-215,630.67-87,341.86

Finding the Fourth Proportional to 156,265.30, 215,630.67 and 87,341.86

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Solution

The fourth proportional to 156,265.30, 215,630.67 and 87,341.86 is: 120,523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,265.30 : 215,630.67 = 87,341.86 : x
  2. Step 2: Convert to fraction form
    156,265.30/215,630.67 = 87,341.86/x
  3. Step 3: Cross multiply
    156,265.30x = 215,630.67 × 87,341.86
  4. Step 4: Simplify right side
    156,265.30x = 18,833,583,790.85
  5. Step 5: Solve for x
    x = 18,833,583,790.85/156,265.30
  6. Step 6: Final answer
    x = 120,523.13

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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.