Home / 143,680.69-198,285.50-80,018.49

Finding the Fourth Proportional to 143,680.69, 198,285.50 and 80,018.49

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Solution

The fourth proportional to 143,680.69, 198,285.50 and 80,018.49 is: 110,428.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,680.69 : 198,285.50 = 80,018.49 : x
  2. Step 2: Convert to fraction form
    143,680.69/198,285.50 = 80,018.49/x
  3. Step 3: Cross multiply
    143,680.69x = 198,285.50 × 80,018.49
  4. Step 4: Simplify right side
    143,680.69x = 15,866,506,298.90
  5. Step 5: Solve for x
    x = 15,866,506,298.90/143,680.69
  6. Step 6: Final answer
    x = 110,428.94

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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.