Home / 148,792.11-205,337.12-87,542.57

Finding the Fourth Proportional to 148,792.11, 205,337.12 and 87,542.57

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Solution

The fourth proportional to 148,792.11, 205,337.12 and 87,542.57 is: 120,811.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,792.11 : 205,337.12 = 87,542.57 : x
  2. Step 2: Convert to fraction form
    148,792.11/205,337.12 = 87,542.57/x
  3. Step 3: Cross multiply
    148,792.11x = 205,337.12 × 87,542.57
  4. Step 4: Simplify right side
    148,792.11x = 17,975,739,201.20
  5. Step 5: Solve for x
    x = 17,975,739,201.20/148,792.11
  6. Step 6: Final answer
    x = 120,811.10

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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.