Home / 142,202.21-196,279.56-84,112.76

Finding the Fourth Proportional to 142,202.21, 196,279.56 and 84,112.76

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Solution

The fourth proportional to 142,202.21, 196,279.56 and 84,112.76 is: 116,099.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,202.21 : 196,279.56 = 84,112.76 : x
  2. Step 2: Convert to fraction form
    142,202.21/196,279.56 = 84,112.76/x
  3. Step 3: Cross multiply
    142,202.21x = 196,279.56 × 84,112.76
  4. Step 4: Simplify right side
    142,202.21x = 16,509,614,822.20
  5. Step 5: Solve for x
    x = 16,509,614,822.20/142,202.21
  6. Step 6: Final answer
    x = 116,099.56

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Half scale
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Double scale
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1.5x scale

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.