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Finding the Fourth Proportional to 111,744, 154,206.72 and 61,446.24

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Solution

The fourth proportional to 111,744, 154,206.72 and 61,446.24 is: 84,795.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,744 : 154,206.72 = 61,446.24 : x
  2. Step 2: Convert to fraction form
    111,744/154,206.72 = 61,446.24/x
  3. Step 3: Cross multiply
    111,744x = 154,206.72 × 61,446.24
  4. Step 4: Simplify right side
    111,744x = 9,475,423,126.73
  5. Step 5: Solve for x
    x = 9,475,423,126.73/111,744
  6. Step 6: Final answer
    x = 84,795.81

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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.