Home / 107,400.72-161,088.62-28,521.12

Finding the Fourth Proportional to 107,400.72, 161,088.62 and 28,521.12

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Solution

The fourth proportional to 107,400.72, 161,088.62 and 28,521.12 is: 42,778.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,400.72 : 161,088.62 = 28,521.12 : x
  2. Step 2: Convert to fraction form
    107,400.72/161,088.62 = 28,521.12/x
  3. Step 3: Cross multiply
    107,400.72x = 161,088.62 × 28,521.12
  4. Step 4: Simplify right side
    107,400.72x = 4,594,427,861.65
  5. Step 5: Solve for x
    x = 4,594,427,861.65/107,400.72
  6. Step 6: Final answer
    x = 42,778.37

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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.