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Finding the Fourth Proportional to 142,388.28, 213,577.56 and 67,544.28

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Solution

The fourth proportional to 142,388.28, 213,577.56 and 67,544.28 is: 101,314.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,388.28 : 213,577.56 = 67,544.28 : x
  2. Step 2: Convert to fraction form
    142,388.28/213,577.56 = 67,544.28/x
  3. Step 3: Cross multiply
    142,388.28x = 213,577.56 × 67,544.28
  4. Step 4: Simplify right side
    142,388.28x = 14,425,942,514.36
  5. Step 5: Solve for x
    x = 14,425,942,514.36/142,388.28
  6. Step 6: Final answer
    x = 101,314.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.