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Finding the Fourth Proportional to 91,716.60, 137,574.90 and 83,843.40

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Solution

The fourth proportional to 91,716.60, 137,574.90 and 83,843.40 is: 125,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,716.60 : 137,574.90 = 83,843.40 : x
  2. Step 2: Convert to fraction form
    91,716.60/137,574.90 = 83,843.40/x
  3. Step 3: Cross multiply
    91,716.60x = 137,574.90 × 83,843.40
  4. Step 4: Simplify right side
    91,716.60x = 11,534,747,370.66
  5. Step 5: Solve for x
    x = 11,534,747,370.66/91,716.60
  6. Step 6: Final answer
    x = 125,765.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.