Home / 100,434.64-150,651.96-38,105.20

Finding the Fourth Proportional to 100,434.64, 150,651.96 and 38,105.20

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Solution

The fourth proportional to 100,434.64, 150,651.96 and 38,105.20 is: 57,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,434.64 : 150,651.96 = 38,105.20 : x
  2. Step 2: Convert to fraction form
    100,434.64/150,651.96 = 38,105.20/x
  3. Step 3: Cross multiply
    100,434.64x = 150,651.96 × 38,105.20
  4. Step 4: Simplify right side
    100,434.64x = 5,740,623,066.19
  5. Step 5: Solve for x
    x = 5,740,623,066.19/100,434.64
  6. Step 6: Final answer
    x = 57,157.80

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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.