Home / 156,266.30-215,632.05-87,342.86

Finding the Fourth Proportional to 156,266.30, 215,632.05 and 87,342.86

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Solution

The fourth proportional to 156,266.30, 215,632.05 and 87,342.86 is: 120,524.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,266.30 : 215,632.05 = 87,342.86 : x
  2. Step 2: Convert to fraction form
    156,266.30/215,632.05 = 87,342.86/x
  3. Step 3: Cross multiply
    156,266.30x = 215,632.05 × 87,342.86
  4. Step 4: Simplify right side
    156,266.30x = 18,833,919,954.66
  5. Step 5: Solve for x
    x = 18,833,919,954.66/156,266.30
  6. Step 6: Final answer
    x = 120,524.51

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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.