Home / 156,971.30-216,617.82-85,353.13

Finding the Fourth Proportional to 156,971.30, 216,617.82 and 85,353.13

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Solution

The fourth proportional to 156,971.30, 216,617.82 and 85,353.13 is: 117,785.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.30 : 216,617.82 = 85,353.13 : x
  2. Step 2: Convert to fraction form
    156,971.30/216,617.82 = 85,353.13/x
  3. Step 3: Cross multiply
    156,971.30x = 216,617.82 × 85,353.13
  4. Step 4: Simplify right side
    156,971.30x = 18,489,008,950.78
  5. Step 5: Solve for x
    x = 18,489,008,950.78/156,971.30
  6. Step 6: Final answer
    x = 117,785.92

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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.