Home / 135,215,991.60-202,823,987.40-81,468,279.60

Finding the Fourth Proportional to 135,215,991.60, 202,823,987.40 and 81,468,279.60

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Solution

The fourth proportional to 135,215,991.60, 202,823,987.40 and 81,468,279.60 is: 122,202,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,215,991.60 : 202,823,987.40 = 81,468,279.60 : x
  2. Step 2: Convert to fraction form
    135,215,991.60/202,823,987.40 = 81,468,279.60/x
  3. Step 3: Cross multiply
    135,215,991.60x = 202,823,987.40 × 81,468,279.60
  4. Step 4: Simplify right side
    135,215,991.60x = 16,523,721,315,090,076
  5. Step 5: Solve for x
    x = 16,523,721,315,090,076/135,215,991.60
  6. Step 6: Final answer
    x = 122,202,419.40

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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.