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Finding the Fourth Proportional to 133,687.50, 184,488.75 and 79,974.78

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Solution

The fourth proportional to 133,687.50, 184,488.75 and 79,974.78 is: 110,365.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,687.50 : 184,488.75 = 79,974.78 : x
  2. Step 2: Convert to fraction form
    133,687.50/184,488.75 = 79,974.78/x
  3. Step 3: Cross multiply
    133,687.50x = 184,488.75 × 79,974.78
  4. Step 4: Simplify right side
    133,687.50x = 14,754,447,193.73
  5. Step 5: Solve for x
    x = 14,754,447,193.73/133,687.50
  6. Step 6: Final answer
    x = 110,365.20

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1.5x scale

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.