Home / 121,269.10-181,903.65-115,825.90

Finding the Fourth Proportional to 121,269.10, 181,903.65 and 115,825.90

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Solution

The fourth proportional to 121,269.10, 181,903.65 and 115,825.90 is: 173,738.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,269.10 : 181,903.65 = 115,825.90 : x
  2. Step 2: Convert to fraction form
    121,269.10/181,903.65 = 115,825.90/x
  3. Step 3: Cross multiply
    121,269.10x = 181,903.65 × 115,825.90
  4. Step 4: Simplify right side
    121,269.10x = 21,069,153,974.54
  5. Step 5: Solve for x
    x = 21,069,153,974.54/121,269.10
  6. Step 6: Final answer
    x = 173,738.85

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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.