Home / 88,198.12-121,357.74-86,098.60

Finding the Fourth Proportional to 88,198.12, 121,357.74 and 86,098.60

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Solution

The fourth proportional to 88,198.12, 121,357.74 and 86,098.60 is: 118,468.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,198.12 : 121,357.74 = 86,098.60 : x
  2. Step 2: Convert to fraction form
    88,198.12/121,357.74 = 86,098.60/x
  3. Step 3: Cross multiply
    88,198.12x = 121,357.74 × 86,098.60
  4. Step 4: Simplify right side
    88,198.12x = 10,448,731,513.16
  5. Step 5: Solve for x
    x = 10,448,731,513.16/88,198.12
  6. Step 6: Final answer
    x = 118,468.87

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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.