Home / 128,103.62-192,182.51-48,142.28

Finding the Fourth Proportional to 128,103.62, 192,182.51 and 48,142.28

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Solution

The fourth proportional to 128,103.62, 192,182.51 and 48,142.28 is: 72,223.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,103.62 : 192,182.51 = 48,142.28 : x
  2. Step 2: Convert to fraction form
    128,103.62/192,182.51 = 48,142.28/x
  3. Step 3: Cross multiply
    128,103.62x = 192,182.51 × 48,142.28
  4. Step 4: Simplify right side
    128,103.62x = 9,252,104,808.33
  5. Step 5: Solve for x
    x = 9,252,104,808.33/128,103.62
  6. Step 6: Final answer
    x = 72,223.60

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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.