Home / 87,370.11-130,863.06-72,205.36

Finding the Fourth Proportional to 87,370.11, 130,863.06 and 72,205.36

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Solution

The fourth proportional to 87,370.11, 130,863.06 and 72,205.36 is: 108,149.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,370.11 : 130,863.06 = 72,205.36 : x
  2. Step 2: Convert to fraction form
    87,370.11/130,863.06 = 72,205.36/x
  3. Step 3: Cross multiply
    87,370.11x = 130,863.06 × 72,205.36
  4. Step 4: Simplify right side
    87,370.11x = 9,449,014,030.84
  5. Step 5: Solve for x
    x = 9,449,014,030.84/87,370.11
  6. Step 6: Final answer
    x = 108,149.27

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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.