Home / 124,467,909.40-186,701,864.10-81,469,739.80

Finding the Fourth Proportional to 124,467,909.40, 186,701,864.10 and 81,469,739.80

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Solution

The fourth proportional to 124,467,909.40, 186,701,864.10 and 81,469,739.80 is: 122,204,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,467,909.40 : 186,701,864.10 = 81,469,739.80 : x
  2. Step 2: Convert to fraction form
    124,467,909.40/186,701,864.10 = 81,469,739.80/x
  3. Step 3: Cross multiply
    124,467,909.40x = 186,701,864.10 × 81,469,739.80
  4. Step 4: Simplify right side
    124,467,909.40x = 15,210,552,288,401,960
  5. Step 5: Solve for x
    x = 15,210,552,288,401,960/124,467,909.40
  6. Step 6: Final answer
    x = 122,204,609.70

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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.