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Finding the Fourth Proportional to 100,357.80, 150,536.70 and 99,666.60

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Solution

The fourth proportional to 100,357.80, 150,536.70 and 99,666.60 is: 149,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,357.80 : 150,536.70 = 99,666.60 : x
  2. Step 2: Convert to fraction form
    100,357.80/150,536.70 = 99,666.60/x
  3. Step 3: Cross multiply
    100,357.80x = 150,536.70 × 99,666.60
  4. Step 4: Simplify right side
    100,357.80x = 15,003,481,064.22
  5. Step 5: Solve for x
    x = 15,003,481,064.22/100,357.80
  6. Step 6: Final answer
    x = 149,499.90

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1.5x scale

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.