Home / 121,455.60-182,139.66-51,340.36

Finding the Fourth Proportional to 121,455.60, 182,139.66 and 51,340.36

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Solution

The fourth proportional to 121,455.60, 182,139.66 and 51,340.36 is: 76,992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,455.60 : 182,139.66 = 51,340.36 : x
  2. Step 2: Convert to fraction form
    121,455.60/182,139.66 = 51,340.36/x
  3. Step 3: Cross multiply
    121,455.60x = 182,139.66 × 51,340.36
  4. Step 4: Simplify right side
    121,455.60x = 9,351,115,714.68
  5. Step 5: Solve for x
    x = 9,351,115,714.68/121,455.60
  6. Step 6: Final answer
    x = 76,992.05

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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.