Home / 131,405.70-197,108.55-121,268.10

Finding the Fourth Proportional to 131,405.70, 197,108.55 and 121,268.10

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Solution

The fourth proportional to 131,405.70, 197,108.55 and 121,268.10 is: 181,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,405.70 : 197,108.55 = 121,268.10 : x
  2. Step 2: Convert to fraction form
    131,405.70/197,108.55 = 121,268.10/x
  3. Step 3: Cross multiply
    131,405.70x = 197,108.55 × 121,268.10
  4. Step 4: Simplify right side
    131,405.70x = 23,902,979,352.26
  5. Step 5: Solve for x
    x = 23,902,979,352.26/131,405.70
  6. Step 6: Final answer
    x = 181,902.15

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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.