Home / 190,675.71-285,947.96-72,380.88

Finding the Fourth Proportional to 190,675.71, 285,947.96 and 72,380.88

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Solution

The fourth proportional to 190,675.71, 285,947.96 and 72,380.88 is: 108,546.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,675.71 : 285,947.96 = 72,380.88 : x
  2. Step 2: Convert to fraction form
    190,675.71/285,947.96 = 72,380.88/x
  3. Step 3: Cross multiply
    190,675.71x = 285,947.96 × 72,380.88
  4. Step 4: Simplify right side
    190,675.71x = 20,697,164,617.10
  5. Step 5: Solve for x
    x = 20,697,164,617.10/190,675.71
  6. Step 6: Final answer
    x = 108,546.41

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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.