Home / 156,619.62-216,135.18-84,999.61

Finding the Fourth Proportional to 156,619.62, 216,135.18 and 84,999.61

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Solution

The fourth proportional to 156,619.62, 216,135.18 and 84,999.61 is: 117,299.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,619.62 : 216,135.18 = 84,999.61 : x
  2. Step 2: Convert to fraction form
    156,619.62/216,135.18 = 84,999.61/x
  3. Step 3: Cross multiply
    156,619.62x = 216,135.18 × 84,999.61
  4. Step 4: Simplify right side
    156,619.62x = 18,371,406,007.28
  5. Step 5: Solve for x
    x = 18,371,406,007.28/156,619.62
  6. Step 6: Final answer
    x = 117,299.52

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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.