Home / 128,154.72-192,231.38-52,252.96

Finding the Fourth Proportional to 128,154.72, 192,231.38 and 52,252.96

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Solution

The fourth proportional to 128,154.72, 192,231.38 and 52,252.96 is: 78,379.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,154.72 : 192,231.38 = 52,252.96 : x
  2. Step 2: Convert to fraction form
    128,154.72/192,231.38 = 52,252.96/x
  3. Step 3: Cross multiply
    128,154.72x = 192,231.38 × 52,252.96
  4. Step 4: Simplify right side
    128,154.72x = 10,044,658,473.41
  5. Step 5: Solve for x
    x = 10,044,658,473.41/128,154.72
  6. Step 6: Final answer
    x = 78,379.15

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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.