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Finding the Fourth Proportional to 99,392.84, 137,166.90 and 56,951.48

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Solution

The fourth proportional to 99,392.84, 137,166.90 and 56,951.48 is: 78,595.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,392.84 : 137,166.90 = 56,951.48 : x
  2. Step 2: Convert to fraction form
    99,392.84/137,166.90 = 56,951.48/x
  3. Step 3: Cross multiply
    99,392.84x = 137,166.90 × 56,951.48
  4. Step 4: Simplify right side
    99,392.84x = 7,811,857,962.01
  5. Step 5: Solve for x
    x = 7,811,857,962.01/99,392.84
  6. Step 6: Final answer
    x = 78,595.78

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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.