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Finding the Fourth Proportional to 143,338.80, 197,798.96 and 79,674.40

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Solution

The fourth proportional to 143,338.80, 197,798.96 and 79,674.40 is: 109,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,338.80 : 197,798.96 = 79,674.40 : x
  2. Step 2: Convert to fraction form
    143,338.80/197,798.96 = 79,674.40/x
  3. Step 3: Cross multiply
    143,338.80x = 197,798.96 × 79,674.40
  4. Step 4: Simplify right side
    143,338.80x = 15,759,513,458.62
  5. Step 5: Solve for x
    x = 15,759,513,458.62/143,338.80
  6. Step 6: Final answer
    x = 109,945.90

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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.