Home / 190,780,042.70-286,207,388.85-81,605,002.70

Finding the Fourth Proportional to 190,780,042.70, 286,207,388.85 and 81,605,002.70

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Solution

The fourth proportional to 190,780,042.70, 286,207,388.85 and 81,605,002.70 is: 122,423,469.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,780,042.70 : 286,207,388.85 = 81,605,002.70 : x
  2. Step 2: Convert to fraction form
    190,780,042.70/286,207,388.85 = 81,605,002.70/x
  3. Step 3: Cross multiply
    190,780,042.70x = 286,207,388.85 × 81,605,002.70
  4. Step 4: Simplify right side
    190,780,042.70x = 23,355,954,739,864,204
  5. Step 5: Solve for x
    x = 23,355,954,739,864,204/190,780,042.70
  6. Step 6: Final answer
    x = 122,423,469.51

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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.