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Finding the Fourth Proportional to 112,997, 155,382.90 and 98,067.08

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Solution

The fourth proportional to 112,997, 155,382.90 and 98,067.08 is: 134,852.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,997 : 155,382.90 = 98,067.08 : x
  2. Step 2: Convert to fraction form
    112,997/155,382.90 = 98,067.08/x
  3. Step 3: Cross multiply
    112,997x = 155,382.90 × 98,067.08
  4. Step 4: Simplify right side
    112,997x = 15,237,947,284.93
  5. Step 5: Solve for x
    x = 15,237,947,284.93/112,997
  6. Step 6: Final answer
    x = 134,852.67

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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.