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Finding the Fourth Proportional to 112,374.36, 155,081.10 and 64,627.68

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Solution

The fourth proportional to 112,374.36, 155,081.10 and 64,627.68 is: 89,188.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,374.36 : 155,081.10 = 64,627.68 : x
  2. Step 2: Convert to fraction form
    112,374.36/155,081.10 = 64,627.68/x
  3. Step 3: Cross multiply
    112,374.36x = 155,081.10 × 64,627.68
  4. Step 4: Simplify right side
    112,374.36x = 10,022,531,704.85
  5. Step 5: Solve for x
    x = 10,022,531,704.85/112,374.36
  6. Step 6: Final answer
    x = 89,188.78

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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.