Home / 142,621.68-213,699.20-75,991.12

Finding the Fourth Proportional to 142,621.68, 213,699.20 and 75,991.12

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Solution

The fourth proportional to 142,621.68, 213,699.20 and 75,991.12 is: 113,862.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,621.68 : 213,699.20 = 75,991.12 : x
  2. Step 2: Convert to fraction form
    142,621.68/213,699.20 = 75,991.12/x
  3. Step 3: Cross multiply
    142,621.68x = 213,699.20 × 75,991.12
  4. Step 4: Simplify right side
    142,621.68x = 16,239,241,551.10
  5. Step 5: Solve for x
    x = 16,239,241,551.10/142,621.68
  6. Step 6: Final answer
    x = 113,862.36

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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.