Home / 99,806.20-149,490.60-53,004.40

Finding the Fourth Proportional to 99,806.20, 149,490.60 and 53,004.40

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Solution

The fourth proportional to 99,806.20, 149,490.60 and 53,004.40 is: 79,390.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,806.20 : 149,490.60 = 53,004.40 : x
  2. Step 2: Convert to fraction form
    99,806.20/149,490.60 = 53,004.40/x
  3. Step 3: Cross multiply
    99,806.20x = 149,490.60 × 53,004.40
  4. Step 4: Simplify right side
    99,806.20x = 7,923,659,558.64
  5. Step 5: Solve for x
    x = 7,923,659,558.64/99,806.20
  6. Step 6: Final answer
    x = 79,390.45

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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.