Home / 130,104.28-179,478.13-87,085.59

Finding the Fourth Proportional to 130,104.28, 179,478.13 and 87,085.59

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Solution

The fourth proportional to 130,104.28, 179,478.13 and 87,085.59 is: 120,134.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,104.28 : 179,478.13 = 87,085.59 : x
  2. Step 2: Convert to fraction form
    130,104.28/179,478.13 = 87,085.59/x
  3. Step 3: Cross multiply
    130,104.28x = 179,478.13 × 87,085.59
  4. Step 4: Simplify right side
    130,104.28x = 15,629,958,843.15
  5. Step 5: Solve for x
    x = 15,629,958,843.15/130,104.28
  6. Step 6: Final answer
    x = 120,134.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.