Home / 110,238.20-165,065.70-86,715.80

Finding the Fourth Proportional to 110,238.20, 165,065.70 and 86,715.80

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Solution

The fourth proportional to 110,238.20, 165,065.70 and 86,715.80 is: 129,844.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,238.20 : 165,065.70 = 86,715.80 : x
  2. Step 2: Convert to fraction form
    110,238.20/165,065.70 = 86,715.80/x
  3. Step 3: Cross multiply
    110,238.20x = 165,065.70 × 86,715.80
  4. Step 4: Simplify right side
    110,238.20x = 14,313,804,228.06
  5. Step 5: Solve for x
    x = 14,313,804,228.06/110,238.20
  6. Step 6: Final answer
    x = 129,844.32

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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.