Home / 100,431.26-150,643.25-30,308.75

Finding the Fourth Proportional to 100,431.26, 150,643.25 and 30,308.75

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Solution

The fourth proportional to 100,431.26, 150,643.25 and 30,308.75 is: 45,462.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,431.26 : 150,643.25 = 30,308.75 : x
  2. Step 2: Convert to fraction form
    100,431.26/150,643.25 = 30,308.75/x
  3. Step 3: Cross multiply
    100,431.26x = 150,643.25 × 30,308.75
  4. Step 4: Simplify right side
    100,431.26x = 4,565,808,451.89
  5. Step 5: Solve for x
    x = 4,565,808,451.89/100,431.26
  6. Step 6: Final answer
    x = 45,462.02

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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.