Home / 142,819.48-197,090.48-79,157.28

Finding the Fourth Proportional to 142,819.48, 197,090.48 and 79,157.28

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Solution

The fourth proportional to 142,819.48, 197,090.48 and 79,157.28 is: 109,236.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,819.48 : 197,090.48 = 79,157.28 : x
  2. Step 2: Convert to fraction form
    142,819.48/197,090.48 = 79,157.28/x
  3. Step 3: Cross multiply
    142,819.48x = 197,090.48 × 79,157.28
  4. Step 4: Simplify right side
    142,819.48x = 15,601,146,310.69
  5. Step 5: Solve for x
    x = 15,601,146,310.69/142,819.48
  6. Step 6: Final answer
    x = 109,236.82

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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.