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Finding the Fourth Proportional to 115,113.29, 158,856.12 and 67,375.67

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Solution

The fourth proportional to 115,113.29, 158,856.12 and 67,375.67 is: 92,978.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,113.29 : 158,856.12 = 67,375.67 : x
  2. Step 2: Convert to fraction form
    115,113.29/158,856.12 = 67,375.67/x
  3. Step 3: Cross multiply
    115,113.29x = 158,856.12 × 67,375.67
  4. Step 4: Simplify right side
    115,113.29x = 10,703,036,724.32
  5. Step 5: Solve for x
    x = 10,703,036,724.32/115,113.29
  6. Step 6: Final answer
    x = 92,978.29

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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.