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Finding the Fourth Proportional to 128,338.83, 192,541.04 and 53,434.08

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Solution

The fourth proportional to 128,338.83, 192,541.04 and 53,434.08 is: 80,164.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,338.83 : 192,541.04 = 53,434.08 : x
  2. Step 2: Convert to fraction form
    128,338.83/192,541.04 = 53,434.08/x
  3. Step 3: Cross multiply
    128,338.83x = 192,541.04 × 53,434.08
  4. Step 4: Simplify right side
    128,338.83x = 10,288,253,067.47
  5. Step 5: Solve for x
    x = 10,288,253,067.47/128,338.83
  6. Step 6: Final answer
    x = 80,164.77

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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.