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Finding the Fourth Proportional to 115,163.84, 158,930.98 and 64,176.59

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Solution

The fourth proportional to 115,163.84, 158,930.98 and 64,176.59 is: 88,566.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,163.84 : 158,930.98 = 64,176.59 : x
  2. Step 2: Convert to fraction form
    115,163.84/158,930.98 = 64,176.59/x
  3. Step 3: Cross multiply
    115,163.84x = 158,930.98 × 64,176.59
  4. Step 4: Simplify right side
    115,163.84x = 10,199,648,578.64
  5. Step 5: Solve for x
    x = 10,199,648,578.64/115,163.84
  6. Step 6: Final answer
    x = 88,566.41

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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.