Home / 162,209.09-242,987.40-80,911.01

Finding the Fourth Proportional to 162,209.09, 242,987.40 and 80,911.01

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Solution

The fourth proportional to 162,209.09, 242,987.40 and 80,911.01 is: 121,203.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,209.09 : 242,987.40 = 80,911.01 : x
  2. Step 2: Convert to fraction form
    162,209.09/242,987.40 = 80,911.01/x
  3. Step 3: Cross multiply
    162,209.09x = 242,987.40 × 80,911.01
  4. Step 4: Simplify right side
    162,209.09x = 19,660,354,736.34
  5. Step 5: Solve for x
    x = 19,660,354,736.34/162,209.09
  6. Step 6: Final answer
    x = 121,203.78

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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.