Home / 156,741.82-216,301.66-85,122.30

Finding the Fourth Proportional to 156,741.82, 216,301.66 and 85,122.30

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Solution

The fourth proportional to 156,741.82, 216,301.66 and 85,122.30 is: 117,467.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,741.82 : 216,301.66 = 85,122.30 : x
  2. Step 2: Convert to fraction form
    156,741.82/216,301.66 = 85,122.30/x
  3. Step 3: Cross multiply
    156,741.82x = 216,301.66 × 85,122.30
  4. Step 4: Simplify right side
    156,741.82x = 18,412,094,793.02
  5. Step 5: Solve for x
    x = 18,412,094,793.02/156,741.82
  6. Step 6: Final answer
    x = 117,467.66

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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.