Home / 142,556.40-196,748.64-82,115.28

Finding the Fourth Proportional to 142,556.40, 196,748.64 and 82,115.28

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Solution

The fourth proportional to 142,556.40, 196,748.64 and 82,115.28 is: 113,331.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,556.40 : 196,748.64 = 82,115.28 : x
  2. Step 2: Convert to fraction form
    142,556.40/196,748.64 = 82,115.28/x
  3. Step 3: Cross multiply
    142,556.40x = 196,748.64 × 82,115.28
  4. Step 4: Simplify right side
    142,556.40x = 16,156,069,663.22
  5. Step 5: Solve for x
    x = 16,156,069,663.22/142,556.40
  6. Step 6: Final answer
    x = 113,331.07

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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.