Home / 144,198.72-198,981.36-80,534.88

Finding the Fourth Proportional to 144,198.72, 198,981.36 and 80,534.88

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Solution

The fourth proportional to 144,198.72, 198,981.36 and 80,534.88 is: 111,130.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,198.72 : 198,981.36 = 80,534.88 : x
  2. Step 2: Convert to fraction form
    144,198.72/198,981.36 = 80,534.88/x
  3. Step 3: Cross multiply
    144,198.72x = 198,981.36 × 80,534.88
  4. Step 4: Simplify right side
    144,198.72x = 16,024,939,949.84
  5. Step 5: Solve for x
    x = 16,024,939,949.84/144,198.72
  6. Step 6: Final answer
    x = 111,130.94

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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.