Home / 142,640.19-196,827.57-78,962.04

Finding the Fourth Proportional to 142,640.19, 196,827.57 and 78,962.04

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Solution

The fourth proportional to 142,640.19, 196,827.57 and 78,962.04 is: 108,958.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,640.19 : 196,827.57 = 78,962.04 : x
  2. Step 2: Convert to fraction form
    142,640.19/196,827.57 = 78,962.04/x
  3. Step 3: Cross multiply
    142,640.19x = 196,827.57 × 78,962.04
  4. Step 4: Simplify right side
    142,640.19x = 15,541,906,455.44
  5. Step 5: Solve for x
    x = 15,541,906,455.44/142,640.19
  6. Step 6: Final answer
    x = 108,958.82

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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.