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Finding the Fourth Proportional to 143,551.91, 198,099.71 and 79,889.69

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Solution

The fourth proportional to 143,551.91, 198,099.71 and 79,889.69 is: 110,246.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,551.91 : 198,099.71 = 79,889.69 : x
  2. Step 2: Convert to fraction form
    143,551.91/198,099.71 = 79,889.69/x
  3. Step 3: Cross multiply
    143,551.91x = 198,099.71 × 79,889.69
  4. Step 4: Simplify right side
    143,551.91x = 15,826,124,816.38
  5. Step 5: Solve for x
    x = 15,826,124,816.38/143,551.91
  6. Step 6: Final answer
    x = 110,246.70

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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.