Home / 130,222.20-195,131.25-90,319.08

Finding the Fourth Proportional to 130,222.20, 195,131.25 and 90,319.08

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Solution

The fourth proportional to 130,222.20, 195,131.25 and 90,319.08 is: 135,338.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,222.20 : 195,131.25 = 90,319.08 : x
  2. Step 2: Convert to fraction form
    130,222.20/195,131.25 = 90,319.08/x
  3. Step 3: Cross multiply
    130,222.20x = 195,131.25 × 90,319.08
  4. Step 4: Simplify right side
    130,222.20x = 17,624,074,979.25
  5. Step 5: Solve for x
    x = 17,624,074,979.25/130,222.20
  6. Step 6: Final answer
    x = 135,338.48

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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.