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Finding the Fourth Proportional to 208,133.87, 312,193.91 and 88,158.76

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Solution

The fourth proportional to 208,133.87, 312,193.91 and 88,158.76 is: 132,235.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,133.87 : 312,193.91 = 88,158.76 : x
  2. Step 2: Convert to fraction form
    208,133.87/312,193.91 = 88,158.76/x
  3. Step 3: Cross multiply
    208,133.87x = 312,193.91 × 88,158.76
  4. Step 4: Simplify right side
    208,133.87x = 27,522,627,425.06
  5. Step 5: Solve for x
    x = 27,522,627,425.06/208,133.87
  6. Step 6: Final answer
    x = 132,235.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.