Home / 121,286.70-181,930.05-91,762.20

Finding the Fourth Proportional to 121,286.70, 181,930.05 and 91,762.20

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Solution

The fourth proportional to 121,286.70, 181,930.05 and 91,762.20 is: 137,643.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,286.70 : 181,930.05 = 91,762.20 : x
  2. Step 2: Convert to fraction form
    121,286.70/181,930.05 = 91,762.20/x
  3. Step 3: Cross multiply
    121,286.70x = 181,930.05 × 91,762.20
  4. Step 4: Simplify right side
    121,286.70x = 16,694,301,634.11
  5. Step 5: Solve for x
    x = 16,694,301,634.11/121,286.70
  6. Step 6: Final answer
    x = 137,643.30

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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.