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Finding the Fourth Proportional to 111,763.87, 154,231.06 and 61,462.87

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Solution

The fourth proportional to 111,763.87, 154,231.06 and 61,462.87 is: 84,817.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,763.87 : 154,231.06 = 61,462.87 : x
  2. Step 2: Convert to fraction form
    111,763.87/154,231.06 = 61,462.87/x
  3. Step 3: Cross multiply
    111,763.87x = 154,231.06 × 61,462.87
  4. Step 4: Simplify right side
    111,763.87x = 9,479,483,590.74
  5. Step 5: Solve for x
    x = 9,479,483,590.74/111,763.87
  6. Step 6: Final answer
    x = 84,817.07

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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.