Home / 148,660.43-205,144.84-85,002.40

Finding the Fourth Proportional to 148,660.43, 205,144.84 and 85,002.40

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Solution

The fourth proportional to 148,660.43, 205,144.84 and 85,002.40 is: 117,299.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,660.43 : 205,144.84 = 85,002.40 : x
  2. Step 2: Convert to fraction form
    148,660.43/205,144.84 = 85,002.40/x
  3. Step 3: Cross multiply
    148,660.43x = 205,144.84 × 85,002.40
  4. Step 4: Simplify right side
    148,660.43x = 17,437,803,022.25
  5. Step 5: Solve for x
    x = 17,437,803,022.25/148,660.43
  6. Step 6: Final answer
    x = 117,299.56

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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.