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Finding the Fourth Proportional to 99,198.84, 136,880.04 and 56,749.44

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Solution

The fourth proportional to 99,198.84, 136,880.04 and 56,749.44 is: 78,306.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,198.84 : 136,880.04 = 56,749.44 : x
  2. Step 2: Convert to fraction form
    99,198.84/136,880.04 = 56,749.44/x
  3. Step 3: Cross multiply
    99,198.84x = 136,880.04 × 56,749.44
  4. Step 4: Simplify right side
    99,198.84x = 7,767,865,617.18
  5. Step 5: Solve for x
    x = 7,767,865,617.18/99,198.84
  6. Step 6: Final answer
    x = 78,306.01

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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.