Home / 107,812.27-161,521.26-78,156.55

Finding the Fourth Proportional to 107,812.27, 161,521.26 and 78,156.55

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Solution

The fourth proportional to 107,812.27, 161,521.26 and 78,156.55 is: 117,091.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,812.27 : 161,521.26 = 78,156.55 : x
  2. Step 2: Convert to fraction form
    107,812.27/161,521.26 = 78,156.55/x
  3. Step 3: Cross multiply
    107,812.27x = 161,521.26 × 78,156.55
  4. Step 4: Simplify right side
    107,812.27x = 12,623,944,433.25
  5. Step 5: Solve for x
    x = 12,623,944,433.25/107,812.27
  6. Step 6: Final answer
    x = 117,091.91

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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.