Home / 156,605.31-216,115.46-84,985.33

Finding the Fourth Proportional to 156,605.31, 216,115.46 and 84,985.33

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Solution

The fourth proportional to 156,605.31, 216,115.46 and 84,985.33 is: 117,279.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,605.31 : 216,115.46 = 84,985.33 : x
  2. Step 2: Convert to fraction form
    156,605.31/216,115.46 = 84,985.33/x
  3. Step 3: Cross multiply
    156,605.31x = 216,115.46 × 84,985.33
  4. Step 4: Simplify right side
    156,605.31x = 18,366,642,605.62
  5. Step 5: Solve for x
    x = 18,366,642,605.62/156,605.31
  6. Step 6: Final answer
    x = 117,279.82

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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.