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Finding the Fourth Proportional to 88,221.70, 133,063 and 82,389.70

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Solution

The fourth proportional to 88,221.70, 133,063 and 82,389.70 is: 124,266.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,221.70 : 133,063 = 82,389.70 : x
  2. Step 2: Convert to fraction form
    88,221.70/133,063 = 82,389.70/x
  3. Step 3: Cross multiply
    88,221.70x = 133,063 × 82,389.70
  4. Step 4: Simplify right side
    88,221.70x = 10,963,020,651.10
  5. Step 5: Solve for x
    x = 10,963,020,651.10/88,221.70
  6. Step 6: Final answer
    x = 124,266.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.