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Finding the Fourth Proportional to 88,722.60, 133,083.90 and 87,264.60

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Solution

The fourth proportional to 88,722.60, 133,083.90 and 87,264.60 is: 130,896.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,722.60 : 133,083.90 = 87,264.60 : x
  2. Step 2: Convert to fraction form
    88,722.60/133,083.90 = 87,264.60/x
  3. Step 3: Cross multiply
    88,722.60x = 133,083.90 × 87,264.60
  4. Step 4: Simplify right side
    88,722.60x = 11,613,513,299.94
  5. Step 5: Solve for x
    x = 11,613,513,299.94/88,722.60
  6. Step 6: Final answer
    x = 130,896.90

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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.