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Finding the Fourth Proportional to 115,242.96, 159,074.64 and 67,511.52

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Solution

The fourth proportional to 115,242.96, 159,074.64 and 67,511.52 is: 93,188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,242.96 : 159,074.64 = 67,511.52 : x
  2. Step 2: Convert to fraction form
    115,242.96/159,074.64 = 67,511.52/x
  3. Step 3: Cross multiply
    115,242.96x = 159,074.64 × 67,511.52
  4. Step 4: Simplify right side
    115,242.96x = 10,739,370,739.85
  5. Step 5: Solve for x
    x = 10,739,370,739.85/115,242.96
  6. Step 6: Final answer
    x = 93,188.95

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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.