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Finding the Fourth Proportional to 110,212.62, 151,928.12 and 86,297.78

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Solution

The fourth proportional to 110,212.62, 151,928.12 and 86,297.78 is: 118,961.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,212.62 : 151,928.12 = 86,297.78 : x
  2. Step 2: Convert to fraction form
    110,212.62/151,928.12 = 86,297.78/x
  3. Step 3: Cross multiply
    110,212.62x = 151,928.12 × 86,297.78
  4. Step 4: Simplify right side
    110,212.62x = 13,111,059,475.57
  5. Step 5: Solve for x
    x = 13,111,059,475.57/110,212.62
  6. Step 6: Final answer
    x = 118,961.51

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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.