Home / 148,921.92-205,513.92-80,939.52

Finding the Fourth Proportional to 148,921.92, 205,513.92 and 80,939.52

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Solution

The fourth proportional to 148,921.92, 205,513.92 and 80,939.52 is: 111,697.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,921.92 : 205,513.92 = 80,939.52 : x
  2. Step 2: Convert to fraction form
    148,921.92/205,513.92 = 80,939.52/x
  3. Step 3: Cross multiply
    148,921.92x = 205,513.92 × 80,939.52
  4. Step 4: Simplify right side
    148,921.92x = 16,634,198,038.12
  5. Step 5: Solve for x
    x = 16,634,198,038.12/148,921.92
  6. Step 6: Final answer
    x = 111,697.45

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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.