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Finding the Fourth Proportional to 99,515.94, 137,466.36 and 79,513.08

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Solution

The fourth proportional to 99,515.94, 137,466.36 and 79,513.08 is: 109,835.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,515.94 : 137,466.36 = 79,513.08 : x
  2. Step 2: Convert to fraction form
    99,515.94/137,466.36 = 79,513.08/x
  3. Step 3: Cross multiply
    99,515.94x = 137,466.36 × 79,513.08
  4. Step 4: Simplify right side
    99,515.94x = 10,930,373,679.99
  5. Step 5: Solve for x
    x = 10,930,373,679.99/99,515.94
  6. Step 6: Final answer
    x = 109,835.41

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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.