Home / 130,171.68-179,634.78-72,812.36

Finding the Fourth Proportional to 130,171.68, 179,634.78 and 72,812.36

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Solution

The fourth proportional to 130,171.68, 179,634.78 and 72,812.36 is: 100,479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,171.68 : 179,634.78 = 72,812.36 : x
  2. Step 2: Convert to fraction form
    130,171.68/179,634.78 = 72,812.36/x
  3. Step 3: Cross multiply
    130,171.68x = 179,634.78 × 72,812.36
  4. Step 4: Simplify right side
    130,171.68x = 13,079,632,269.88
  5. Step 5: Solve for x
    x = 13,079,632,269.88/130,171.68
  6. Step 6: Final answer
    x = 100,479.86

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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.