Home / 150,129.60-225,158.40-86,812.80

Finding the Fourth Proportional to 150,129.60, 225,158.40 and 86,812.80

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Solution

The fourth proportional to 150,129.60, 225,158.40 and 86,812.80 is: 130,198.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,129.60 : 225,158.40 = 86,812.80 : x
  2. Step 2: Convert to fraction form
    150,129.60/225,158.40 = 86,812.80/x
  3. Step 3: Cross multiply
    150,129.60x = 225,158.40 × 86,812.80
  4. Step 4: Simplify right side
    150,129.60x = 19,546,631,147.52
  5. Step 5: Solve for x
    x = 19,546,631,147.52/150,129.60
  6. Step 6: Final answer
    x = 130,198.38

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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.