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Finding the Fourth Proportional to 149,060.80, 223,809.90 and 90,011.80

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Solution

The fourth proportional to 149,060.80, 223,809.90 and 90,011.80 is: 135,149.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,060.80 : 223,809.90 = 90,011.80 : x
  2. Step 2: Convert to fraction form
    149,060.80/223,809.90 = 90,011.80/x
  3. Step 3: Cross multiply
    149,060.80x = 223,809.90 × 90,011.80
  4. Step 4: Simplify right side
    149,060.80x = 20,145,531,956.82
  5. Step 5: Solve for x
    x = 20,145,531,956.82/149,060.80
  6. Step 6: Final answer
    x = 135,149.76

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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.