Home / 142,169.60-196,192.83-78,506.03

Finding the Fourth Proportional to 142,169.60, 196,192.83 and 78,506.03

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Solution

The fourth proportional to 142,169.60, 196,192.83 and 78,506.03 is: 108,337.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,169.60 : 196,192.83 = 78,506.03 : x
  2. Step 2: Convert to fraction form
    142,169.60/196,192.83 = 78,506.03/x
  3. Step 3: Cross multiply
    142,169.60x = 196,192.83 × 78,506.03
  4. Step 4: Simplify right side
    142,169.60x = 15,402,320,982.64
  5. Step 5: Solve for x
    x = 15,402,320,982.64/142,169.60
  6. Step 6: Final answer
    x = 108,337.65

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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.