Home / 121,117.40-181,676.10-115,998.20

Finding the Fourth Proportional to 121,117.40, 181,676.10 and 115,998.20

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Solution

The fourth proportional to 121,117.40, 181,676.10 and 115,998.20 is: 173,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,117.40 : 181,676.10 = 115,998.20 : x
  2. Step 2: Convert to fraction form
    121,117.40/181,676.10 = 115,998.20/x
  3. Step 3: Cross multiply
    121,117.40x = 181,676.10 × 115,998.20
  4. Step 4: Simplify right side
    121,117.40x = 21,074,100,583.02
  5. Step 5: Solve for x
    x = 21,074,100,583.02/121,117.40
  6. Step 6: Final answer
    x = 173,997.30

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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.