Home / 130,556.20-196,251.90-121,311.40

Finding the Fourth Proportional to 130,556.20, 196,251.90 and 121,311.40

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Solution

The fourth proportional to 130,556.20, 196,251.90 and 121,311.40 is: 182,355.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,556.20 : 196,251.90 = 121,311.40 : x
  2. Step 2: Convert to fraction form
    130,556.20/196,251.90 = 121,311.40/x
  3. Step 3: Cross multiply
    130,556.20x = 196,251.90 × 121,311.40
  4. Step 4: Simplify right side
    130,556.20x = 23,807,592,741.66
  5. Step 5: Solve for x
    x = 23,807,592,741.66/130,556.20
  6. Step 6: Final answer
    x = 182,355.13

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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.