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Finding the Fourth Proportional to 86,922.80, 130,189.80 and 75,258.80

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Solution

The fourth proportional to 86,922.80, 130,189.80 and 75,258.80 is: 112,719.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,922.80 : 130,189.80 = 75,258.80 : x
  2. Step 2: Convert to fraction form
    86,922.80/130,189.80 = 75,258.80/x
  3. Step 3: Cross multiply
    86,922.80x = 130,189.80 × 75,258.80
  4. Step 4: Simplify right side
    86,922.80x = 9,797,928,120.24
  5. Step 5: Solve for x
    x = 9,797,928,120.24/86,922.80
  6. Step 6: Final answer
    x = 112,719.89

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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.