Home / 87,419.14-130,955.09-67,359.03

Finding the Fourth Proportional to 87,419.14, 130,955.09 and 67,359.03

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Solution

The fourth proportional to 87,419.14, 130,955.09 and 67,359.03 is: 100,904.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,419.14 : 130,955.09 = 67,359.03 : x
  2. Step 2: Convert to fraction form
    87,419.14/130,955.09 = 67,359.03/x
  3. Step 3: Cross multiply
    87,419.14x = 130,955.09 × 67,359.03
  4. Step 4: Simplify right side
    87,419.14x = 8,821,008,034.17
  5. Step 5: Solve for x
    x = 8,821,008,034.17/87,419.14
  6. Step 6: Final answer
    x = 100,904.77

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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.