Home / 103,833.12-155,650.20-66,287.28

Finding the Fourth Proportional to 103,833.12, 155,650.20 and 66,287.28

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Solution

The fourth proportional to 103,833.12, 155,650.20 and 66,287.28 is: 99,367.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,833.12 : 155,650.20 = 66,287.28 : x
  2. Step 2: Convert to fraction form
    103,833.12/155,650.20 = 66,287.28/x
  3. Step 3: Cross multiply
    103,833.12x = 155,650.20 × 66,287.28
  4. Step 4: Simplify right side
    103,833.12x = 10,317,628,389.46
  5. Step 5: Solve for x
    x = 10,317,628,389.46/103,833.12
  6. Step 6: Final answer
    x = 99,367.41

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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.