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Finding the Fourth Proportional to 131,009.62, 180,788.07 and 74,414.74

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Solution

The fourth proportional to 131,009.62, 180,788.07 and 74,414.74 is: 102,689.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,009.62 : 180,788.07 = 74,414.74 : x
  2. Step 2: Convert to fraction form
    131,009.62/180,788.07 = 74,414.74/x
  3. Step 3: Cross multiply
    131,009.62x = 180,788.07 × 74,414.74
  4. Step 4: Simplify right side
    131,009.62x = 13,453,297,224.15
  5. Step 5: Solve for x
    x = 13,453,297,224.15/131,009.62
  6. Step 6: Final answer
    x = 102,689.38

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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.