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Finding the Third Proportional to 121,614,420 and 188,468,867.50

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Solution

The third proportional to 121,614,420 and 188,468,867.50 is: 292,074,854.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,614,420 : 188,468,867.50 = 188,468,867.50 : x
  2. Step 2: Convert to fraction form
    121,614,420/188,468,867.50 = 188,468,867.50/x
  3. Step 3: Cross multiply
    121,614,420x = 188,468,867.50 × 188,468,867.50
  4. Step 4: Simplify right side
    121,614,420x = 35,520,514,016,732,556
  5. Step 5: Solve for x
    x = 35,520,514,016,732,556/121,614,420
  6. Step 6: Final answer
    x = 292,074,854.42

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.