Home / 121,400.44-181,988.50-76,892.60

Finding the Fourth Proportional to 121,400.44, 181,988.50 and 76,892.60

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Solution

The fourth proportional to 121,400.44, 181,988.50 and 76,892.60 is: 115,267.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,400.44 : 181,988.50 = 76,892.60 : x
  2. Step 2: Convert to fraction form
    121,400.44/181,988.50 = 76,892.60/x
  3. Step 3: Cross multiply
    121,400.44x = 181,988.50 × 76,892.60
  4. Step 4: Simplify right side
    121,400.44x = 13,993,568,935.10
  5. Step 5: Solve for x
    x = 13,993,568,935.10/121,400.44
  6. Step 6: Final answer
    x = 115,267.86

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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.