Home / 131,110.40-180,921.60-74,508.80

Finding the Fourth Proportional to 131,110.40, 180,921.60 and 74,508.80

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Solution

The fourth proportional to 131,110.40, 180,921.60 and 74,508.80 is: 102,816.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,110.40 : 180,921.60 = 74,508.80 : x
  2. Step 2: Convert to fraction form
    131,110.40/180,921.60 = 74,508.80/x
  3. Step 3: Cross multiply
    131,110.40x = 180,921.60 × 74,508.80
  4. Step 4: Simplify right side
    131,110.40x = 13,480,251,310.08
  5. Step 5: Solve for x
    x = 13,480,251,310.08/131,110.40
  6. Step 6: Final answer
    x = 102,816.03

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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.