Home / 135,168,076.20-202,752,114.30-81,420,364.20

Finding the Fourth Proportional to 135,168,076.20, 202,752,114.30 and 81,420,364.20

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Solution

The fourth proportional to 135,168,076.20, 202,752,114.30 and 81,420,364.20 is: 122,130,546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,168,076.20 : 202,752,114.30 = 81,420,364.20 : x
  2. Step 2: Convert to fraction form
    135,168,076.20/202,752,114.30 = 81,420,364.20/x
  3. Step 3: Cross multiply
    135,168,076.20x = 202,752,114.30 × 81,420,364.20
  4. Step 4: Simplify right side
    135,168,076.20x = 16,508,150,988,626,030
  5. Step 5: Solve for x
    x = 16,508,150,988,626,030/135,168,076.20
  6. Step 6: Final answer
    x = 122,130,546.30

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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.