Home / 142,354.25-196,441.14-78,687.94

Finding the Fourth Proportional to 142,354.25, 196,441.14 and 78,687.94

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Solution

The fourth proportional to 142,354.25, 196,441.14 and 78,687.94 is: 108,585.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,354.25 : 196,441.14 = 78,687.94 : x
  2. Step 2: Convert to fraction form
    142,354.25/196,441.14 = 78,687.94/x
  3. Step 3: Cross multiply
    142,354.25x = 196,441.14 × 78,687.94
  4. Step 4: Simplify right side
    142,354.25x = 15,457,548,146.75
  5. Step 5: Solve for x
    x = 15,457,548,146.75/142,354.25
  6. Step 6: Final answer
    x = 108,585.09

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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.