Home / 128,089.20-192,002.55-53,252.80

Finding the Fourth Proportional to 128,089.20, 192,002.55 and 53,252.80

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Solution

The fourth proportional to 128,089.20, 192,002.55 and 53,252.80 is: 79,824.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,089.20 : 192,002.55 = 53,252.80 : x
  2. Step 2: Convert to fraction form
    128,089.20/192,002.55 = 53,252.80/x
  3. Step 3: Cross multiply
    128,089.20x = 192,002.55 × 53,252.80
  4. Step 4: Simplify right side
    128,089.20x = 10,224,673,394.64
  5. Step 5: Solve for x
    x = 10,224,673,394.64/128,089.20
  6. Step 6: Final answer
    x = 79,824.63

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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.