Home / 156,939.96-216,575.76-85,319.76

Finding the Fourth Proportional to 156,939.96, 216,575.76 and 85,319.76

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Solution

The fourth proportional to 156,939.96, 216,575.76 and 85,319.76 is: 117,740.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,939.96 : 216,575.76 = 85,319.76 : x
  2. Step 2: Convert to fraction form
    156,939.96/216,575.76 = 85,319.76/x
  3. Step 3: Cross multiply
    156,939.96x = 216,575.76 × 85,319.76
  4. Step 4: Simplify right side
    156,939.96x = 18,478,191,865.02
  5. Step 5: Solve for x
    x = 18,478,191,865.02/156,939.96
  6. Step 6: Final answer
    x = 117,740.52

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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.