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Finding the Fourth Proportional to 99,927.81, 137,900.81 and 54,605.69

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Solution

The fourth proportional to 99,927.81, 137,900.81 and 54,605.69 is: 75,356.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,927.81 : 137,900.81 = 54,605.69 : x
  2. Step 2: Convert to fraction form
    99,927.81/137,900.81 = 54,605.69/x
  3. Step 3: Cross multiply
    99,927.81x = 137,900.81 × 54,605.69
  4. Step 4: Simplify right side
    99,927.81x = 7,530,167,919.08
  5. Step 5: Solve for x
    x = 7,530,167,919.08/99,927.81
  6. Step 6: Final answer
    x = 75,356.08

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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.