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Finding the Fourth Proportional to 143,167.80, 197,580.71 and 79,505.60

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Solution

The fourth proportional to 143,167.80, 197,580.71 and 79,505.60 is: 109,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,167.80 : 197,580.71 = 79,505.60 : x
  2. Step 2: Convert to fraction form
    143,167.80/197,580.71 = 79,505.60/x
  3. Step 3: Cross multiply
    143,167.80x = 197,580.71 × 79,505.60
  4. Step 4: Simplify right side
    143,167.80x = 15,708,771,511.54
  5. Step 5: Solve for x
    x = 15,708,771,511.54/143,167.80
  6. Step 6: Final answer
    x = 109,722.80

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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.