Home / 151,965.43-209,716.47-83,986.81

Finding the Fourth Proportional to 151,965.43, 209,716.47 and 83,986.81

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Solution

The fourth proportional to 151,965.43, 209,716.47 and 83,986.81 is: 115,904.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,965.43 : 209,716.47 = 83,986.81 : x
  2. Step 2: Convert to fraction form
    151,965.43/209,716.47 = 83,986.81/x
  3. Step 3: Cross multiply
    151,965.43x = 209,716.47 × 83,986.81
  4. Step 4: Simplify right side
    151,965.43x = 17,613,416,795.47
  5. Step 5: Solve for x
    x = 17,613,416,795.47/151,965.43
  6. Step 6: Final answer
    x = 115,904.10

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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.