Home / 156,781.09-216,359.87-85,162.31

Finding the Fourth Proportional to 156,781.09, 216,359.87 and 85,162.31

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Solution

The fourth proportional to 156,781.09, 216,359.87 and 85,162.31 is: 117,525.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.09 : 216,359.87 = 85,162.31 : x
  2. Step 2: Convert to fraction form
    156,781.09/216,359.87 = 85,162.31/x
  3. Step 3: Cross multiply
    156,781.09x = 216,359.87 × 85,162.31
  4. Step 4: Simplify right side
    156,781.09x = 18,425,706,320.50
  5. Step 5: Solve for x
    x = 18,425,706,320.50/156,781.09
  6. Step 6: Final answer
    x = 117,525.06

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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.