Home / 190,458.28-285,689.88-131,278.08

Finding the Fourth Proportional to 190,458.28, 285,689.88 and 131,278.08

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Solution

The fourth proportional to 190,458.28, 285,689.88 and 131,278.08 is: 196,918.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,458.28 : 285,689.88 = 131,278.08 : x
  2. Step 2: Convert to fraction form
    190,458.28/285,689.88 = 131,278.08/x
  3. Step 3: Cross multiply
    190,458.28x = 285,689.88 × 131,278.08
  4. Step 4: Simplify right side
    190,458.28x = 37,504,818,921.83
  5. Step 5: Solve for x
    x = 37,504,818,921.83/190,458.28
  6. Step 6: Final answer
    x = 196,918.82

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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.