Home / 98,613.12-136,198.32-66,291.60

Finding the Fourth Proportional to 98,613.12, 136,198.32 and 66,291.60

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Solution

The fourth proportional to 98,613.12, 136,198.32 and 66,291.60 is: 91,557.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,613.12 : 136,198.32 = 66,291.60 : x
  2. Step 2: Convert to fraction form
    98,613.12/136,198.32 = 66,291.60/x
  3. Step 3: Cross multiply
    98,613.12x = 136,198.32 × 66,291.60
  4. Step 4: Simplify right side
    98,613.12x = 9,028,804,550.11
  5. Step 5: Solve for x
    x = 9,028,804,550.11/98,613.12
  6. Step 6: Final answer
    x = 91,557.84

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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.