Home / 132,421.20-198,464.40-53,491.20

Finding the Fourth Proportional to 132,421.20, 198,464.40 and 53,491.20

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Solution

The fourth proportional to 132,421.20, 198,464.40 and 53,491.20 is: 80,169.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,421.20 : 198,464.40 = 53,491.20 : x
  2. Step 2: Convert to fraction form
    132,421.20/198,464.40 = 53,491.20/x
  3. Step 3: Cross multiply
    132,421.20x = 198,464.40 × 53,491.20
  4. Step 4: Simplify right side
    132,421.20x = 10,616,098,913.28
  5. Step 5: Solve for x
    x = 10,616,098,913.28/132,421.20
  6. Step 6: Final answer
    x = 80,169.18

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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.