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Finding the Fourth Proportional to 143,207.84, 197,626.74 and 79,551.56

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Solution

The fourth proportional to 143,207.84, 197,626.74 and 79,551.56 is: 109,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,207.84 : 197,626.74 = 79,551.56 : x
  2. Step 2: Convert to fraction form
    143,207.84/197,626.74 = 79,551.56/x
  3. Step 3: Cross multiply
    143,207.84x = 197,626.74 × 79,551.56
  4. Step 4: Simplify right side
    143,207.84x = 15,721,515,464.71
  5. Step 5: Solve for x
    x = 15,721,515,464.71/143,207.84
  6. Step 6: Final answer
    x = 109,781.11

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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.