Home / 128,146.30-192,147.46-53,216.03

Finding the Fourth Proportional to 128,146.30, 192,147.46 and 53,216.03

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Solution

The fourth proportional to 128,146.30, 192,147.46 and 53,216.03 is: 79,794.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,146.30 : 192,147.46 = 53,216.03 : x
  2. Step 2: Convert to fraction form
    128,146.30/192,147.46 = 53,216.03/x
  3. Step 3: Cross multiply
    128,146.30x = 192,147.46 × 53,216.03
  4. Step 4: Simplify right side
    128,146.30x = 10,225,325,343.11
  5. Step 5: Solve for x
    x = 10,225,325,343.11/128,146.30
  6. Step 6: Final answer
    x = 79,794.15

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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.