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Finding the Fourth Proportional to 115,217.84, 159,021.24 and 67,468.40

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Solution

The fourth proportional to 115,217.84, 159,021.24 and 67,468.40 is: 93,118.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,217.84 : 159,021.24 = 67,468.40 : x
  2. Step 2: Convert to fraction form
    115,217.84/159,021.24 = 67,468.40/x
  3. Step 3: Cross multiply
    115,217.84x = 159,021.24 × 67,468.40
  4. Step 4: Simplify right side
    115,217.84x = 10,728,908,628.82
  5. Step 5: Solve for x
    x = 10,728,908,628.82/115,217.84
  6. Step 6: Final answer
    x = 93,118.47

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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.