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Finding the Fourth Proportional to 99,811.80, 149,717.70 and 98,499.60

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Solution

The fourth proportional to 99,811.80, 149,717.70 and 98,499.60 is: 147,749.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,811.80 : 149,717.70 = 98,499.60 : x
  2. Step 2: Convert to fraction form
    99,811.80/149,717.70 = 98,499.60/x
  3. Step 3: Cross multiply
    99,811.80x = 149,717.70 × 98,499.60
  4. Step 4: Simplify right side
    99,811.80x = 14,747,133,562.92
  5. Step 5: Solve for x
    x = 14,747,133,562.92/99,811.80
  6. Step 6: Final answer
    x = 147,749.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.