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Finding the Fourth Proportional to 99,373, 137,136.92 and 54,661

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Solution

The fourth proportional to 99,373, 137,136.92 and 54,661 is: 75,433.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,373 : 137,136.92 = 54,661 : x
  2. Step 2: Convert to fraction form
    99,373/137,136.92 = 54,661/x
  3. Step 3: Cross multiply
    99,373x = 137,136.92 × 54,661
  4. Step 4: Simplify right side
    99,373x = 7,496,041,184.12
  5. Step 5: Solve for x
    x = 7,496,041,184.12/99,373
  6. Step 6: Final answer
    x = 75,433.38

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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.