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Finding the Fourth Proportional to 143,316, 197,766.72 and 79,651.44

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Solution

The fourth proportional to 143,316, 197,766.72 and 79,651.44 is: 109,913.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,316 : 197,766.72 = 79,651.44 : x
  2. Step 2: Convert to fraction form
    143,316/197,766.72 = 79,651.44/x
  3. Step 3: Cross multiply
    143,316x = 197,766.72 × 79,651.44
  4. Step 4: Simplify right side
    143,316x = 15,752,404,032.08
  5. Step 5: Solve for x
    x = 15,752,404,032.08/143,316
  6. Step 6: Final answer
    x = 109,913.79

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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.