Home / 149,561,540.82-206,429,364-87,701,808.42

Finding the Fourth Proportional to 149,561,540.82, 206,429,364 and 87,701,808.42

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Solution

The fourth proportional to 149,561,540.82, 206,429,364 and 87,701,808.42 is: 121,048,689.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,561,540.82 : 206,429,364 = 87,701,808.42 : x
  2. Step 2: Convert to fraction form
    149,561,540.82/206,429,364 = 87,701,808.42/x
  3. Step 3: Cross multiply
    149,561,540.82x = 206,429,364 × 87,701,808.42
  4. Step 4: Simplify right side
    149,561,540.82x = 18,104,228,533,790,444
  5. Step 5: Solve for x
    x = 18,104,228,533,790,444/149,561,540.82
  6. Step 6: Final answer
    x = 121,048,689.62

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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.