Home / 156,619.29-216,134.79-84,999.36

Finding the Fourth Proportional to 156,619.29, 216,134.79 and 84,999.36

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Solution

The fourth proportional to 156,619.29, 216,134.79 and 84,999.36 is: 117,299.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,619.29 : 216,134.79 = 84,999.36 : x
  2. Step 2: Convert to fraction form
    156,619.29/216,134.79 = 84,999.36/x
  3. Step 3: Cross multiply
    156,619.29x = 216,134.79 × 84,999.36
  4. Step 4: Simplify right side
    156,619.29x = 18,371,318,823.73
  5. Step 5: Solve for x
    x = 18,371,318,823.73/156,619.29
  6. Step 6: Final answer
    x = 117,299.21

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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.