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Finding the Fourth Proportional to 123,005.70, 183,834.62 and 89,795.70

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Solution

The fourth proportional to 123,005.70, 183,834.62 and 89,795.70 is: 134,201.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,005.70 : 183,834.62 = 89,795.70 : x
  2. Step 2: Convert to fraction form
    123,005.70/183,834.62 = 89,795.70/x
  3. Step 3: Cross multiply
    123,005.70x = 183,834.62 × 89,795.70
  4. Step 4: Simplify right side
    123,005.70x = 16,507,557,938.16
  5. Step 5: Solve for x
    x = 16,507,557,938.16/123,005.70
  6. Step 6: Final answer
    x = 134,201.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.