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Finding the Fourth Proportional to 144,053.84, 198,805.55 and 80,401.20

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Solution

The fourth proportional to 144,053.84, 198,805.55 and 80,401.20 is: 110,959.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,053.84 : 198,805.55 = 80,401.20 : x
  2. Step 2: Convert to fraction form
    144,053.84/198,805.55 = 80,401.20/x
  3. Step 3: Cross multiply
    144,053.84x = 198,805.55 × 80,401.20
  4. Step 4: Simplify right side
    144,053.84x = 15,984,204,384.65
  5. Step 5: Solve for x
    x = 15,984,204,384.65/144,053.84
  6. Step 6: Final answer
    x = 110,959.94

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1.5x scale

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.