Home / 148,132.80-204,390.72-87,673.20

Finding the Fourth Proportional to 148,132.80, 204,390.72 and 87,673.20

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Solution

The fourth proportional to 148,132.80, 204,390.72 and 87,673.20 is: 120,969.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,132.80 : 204,390.72 = 87,673.20 : x
  2. Step 2: Convert to fraction form
    148,132.80/204,390.72 = 87,673.20/x
  3. Step 3: Cross multiply
    148,132.80x = 204,390.72 × 87,673.20
  4. Step 4: Simplify right side
    148,132.80x = 17,919,588,472.70
  5. Step 5: Solve for x
    x = 17,919,588,472.70/148,132.80
  6. Step 6: Final answer
    x = 120,969.75

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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.