Home / 207,679,456.90-286,685,896.22-129,401,685.87

Finding the Fourth Proportional to 207,679,456.90, 286,685,896.22 and 129,401,685.87

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Solution

The fourth proportional to 207,679,456.90, 286,685,896.22 and 129,401,685.87 is: 178,629,310.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,679,456.90 : 286,685,896.22 = 129,401,685.87 : x
  2. Step 2: Convert to fraction form
    207,679,456.90/286,685,896.22 = 129,401,685.87/x
  3. Step 3: Cross multiply
    207,679,456.90x = 286,685,896.22 × 129,401,685.87
  4. Step 4: Simplify right side
    207,679,456.90x = 37,097,638,286,019,864
  5. Step 5: Solve for x
    x = 37,097,638,286,019,864/207,679,456.90
  6. Step 6: Final answer
    x = 178,629,310.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.