Home / 155,126.40-231,998.40-130,243.20

Finding the Fourth Proportional to 155,126.40, 231,998.40 and 130,243.20

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Solution

The fourth proportional to 155,126.40, 231,998.40 and 130,243.20 is: 194,784.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,126.40 : 231,998.40 = 130,243.20 : x
  2. Step 2: Convert to fraction form
    155,126.40/231,998.40 = 130,243.20/x
  3. Step 3: Cross multiply
    155,126.40x = 231,998.40 × 130,243.20
  4. Step 4: Simplify right side
    155,126.40x = 30,216,214,010.88
  5. Step 5: Solve for x
    x = 30,216,214,010.88/155,126.40
  6. Step 6: Final answer
    x = 194,784.47

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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.