Home / 130,849.20-196,273.80-121,129.20

Finding the Fourth Proportional to 130,849.20, 196,273.80 and 121,129.20

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Solution

The fourth proportional to 130,849.20, 196,273.80 and 121,129.20 is: 181,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,849.20 : 196,273.80 = 121,129.20 : x
  2. Step 2: Convert to fraction form
    130,849.20/196,273.80 = 121,129.20/x
  3. Step 3: Cross multiply
    130,849.20x = 196,273.80 × 121,129.20
  4. Step 4: Simplify right side
    130,849.20x = 23,774,488,374.96
  5. Step 5: Solve for x
    x = 23,774,488,374.96/130,849.20
  6. Step 6: Final answer
    x = 181,693.80

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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.