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Finding the Fourth Proportional to 143,097.84, 197,476.32 and 79,441.68

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Solution

The fourth proportional to 143,097.84, 197,476.32 and 79,441.68 is: 109,630.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,097.84 : 197,476.32 = 79,441.68 : x
  2. Step 2: Convert to fraction form
    143,097.84/197,476.32 = 79,441.68/x
  3. Step 3: Cross multiply
    143,097.84x = 197,476.32 × 79,441.68
  4. Step 4: Simplify right side
    143,097.84x = 15,687,850,621.02
  5. Step 5: Solve for x
    x = 15,687,850,621.02/143,097.84
  6. Step 6: Final answer
    x = 109,630.24

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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.