Home / 131,145.62-180,975.60-77,447.90

Finding the Fourth Proportional to 131,145.62, 180,975.60 and 77,447.90

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Solution

The fourth proportional to 131,145.62, 180,975.60 and 77,447.90 is: 106,874.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,145.62 : 180,975.60 = 77,447.90 : x
  2. Step 2: Convert to fraction form
    131,145.62/180,975.60 = 77,447.90/x
  3. Step 3: Cross multiply
    131,145.62x = 180,975.60 × 77,447.90
  4. Step 4: Simplify right side
    131,145.62x = 14,016,180,171.24
  5. Step 5: Solve for x
    x = 14,016,180,171.24/131,145.62
  6. Step 6: Final answer
    x = 106,874.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.