Home / 107,759.50-161,643.78-31,858.20

Finding the Fourth Proportional to 107,759.50, 161,643.78 and 31,858.20

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Solution

The fourth proportional to 107,759.50, 161,643.78 and 31,858.20 is: 47,788.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,759.50 : 161,643.78 = 31,858.20 : x
  2. Step 2: Convert to fraction form
    107,759.50/161,643.78 = 31,858.20/x
  3. Step 3: Cross multiply
    107,759.50x = 161,643.78 × 31,858.20
  4. Step 4: Simplify right side
    107,759.50x = 5,149,679,872.00
  5. Step 5: Solve for x
    x = 5,149,679,872.00/107,759.50
  6. Step 6: Final answer
    x = 47,788.64

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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.