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Finding the Fourth Proportional to 135,815.84, 187,274.40 and 88,006.40

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Solution

The fourth proportional to 135,815.84, 187,274.40 and 88,006.40 is: 121,350.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,815.84 : 187,274.40 = 88,006.40 : x
  2. Step 2: Convert to fraction form
    135,815.84/187,274.40 = 88,006.40/x
  3. Step 3: Cross multiply
    135,815.84x = 187,274.40 × 88,006.40
  4. Step 4: Simplify right side
    135,815.84x = 16,481,345,756.16
  5. Step 5: Solve for x
    x = 16,481,345,756.16/135,815.84
  6. Step 6: Final answer
    x = 121,350.69

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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.