Home / 128,165.24-192,218.28-38,189.64

Finding the Fourth Proportional to 128,165.24, 192,218.28 and 38,189.64

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Solution

The fourth proportional to 128,165.24, 192,218.28 and 38,189.64 is: 57,275.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,165.24 : 192,218.28 = 38,189.64 : x
  2. Step 2: Convert to fraction form
    128,165.24/192,218.28 = 38,189.64/x
  3. Step 3: Cross multiply
    128,165.24x = 192,218.28 × 38,189.64
  4. Step 4: Simplify right side
    128,165.24x = 7,340,746,914.62
  5. Step 5: Solve for x
    x = 7,340,746,914.62/128,165.24
  6. Step 6: Final answer
    x = 57,275.65

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1.5x scale

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.