Home / 165,388.60-248,207.72-121,130.10

Finding the Fourth Proportional to 165,388.60, 248,207.72 and 121,130.10

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Solution

The fourth proportional to 165,388.60, 248,207.72 and 121,130.10 is: 181,786.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,388.60 : 248,207.72 = 121,130.10 : x
  2. Step 2: Convert to fraction form
    165,388.60/248,207.72 = 121,130.10/x
  3. Step 3: Cross multiply
    165,388.60x = 248,207.72 × 121,130.10
  4. Step 4: Simplify right side
    165,388.60x = 30,065,425,944.37
  5. Step 5: Solve for x
    x = 30,065,425,944.37/165,388.60
  6. Step 6: Final answer
    x = 181,786.57

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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.