Home / 141,628.40-212,005.20-82,287.80

Finding the Fourth Proportional to 141,628.40, 212,005.20 and 82,287.80

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Solution

The fourth proportional to 141,628.40, 212,005.20 and 82,287.80 is: 123,177.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,628.40 : 212,005.20 = 82,287.80 : x
  2. Step 2: Convert to fraction form
    141,628.40/212,005.20 = 82,287.80/x
  3. Step 3: Cross multiply
    141,628.40x = 212,005.20 × 82,287.80
  4. Step 4: Simplify right side
    141,628.40x = 17,445,441,496.56
  5. Step 5: Solve for x
    x = 17,445,441,496.56/141,628.40
  6. Step 6: Final answer
    x = 123,177.57

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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.