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Finding the Fourth Proportional to 115,497.84, 159,429.40 and 67,791.20

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Solution

The fourth proportional to 115,497.84, 159,429.40 and 67,791.20 is: 93,576.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,497.84 : 159,429.40 = 67,791.20 : x
  2. Step 2: Convert to fraction form
    115,497.84/159,429.40 = 67,791.20/x
  3. Step 3: Cross multiply
    115,497.84x = 159,429.40 × 67,791.20
  4. Step 4: Simplify right side
    115,497.84x = 10,807,910,341.28
  5. Step 5: Solve for x
    x = 10,807,910,341.28/115,497.84
  6. Step 6: Final answer
    x = 93,576.73

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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.