Home / 130,238.60-195,422.70-74,121.80

Finding the Fourth Proportional to 130,238.60, 195,422.70 and 74,121.80

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Solution

The fourth proportional to 130,238.60, 195,422.70 and 74,121.80 is: 111,219.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,238.60 : 195,422.70 = 74,121.80 : x
  2. Step 2: Convert to fraction form
    130,238.60/195,422.70 = 74,121.80/x
  3. Step 3: Cross multiply
    130,238.60x = 195,422.70 × 74,121.80
  4. Step 4: Simplify right side
    130,238.60x = 14,485,082,284.86
  5. Step 5: Solve for x
    x = 14,485,082,284.86/130,238.60
  6. Step 6: Final answer
    x = 111,219.58

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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.