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Finding the Third Proportional to 86,899,421.25 and 121,789,316.25

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Solution

The third proportional to 86,899,421.25 and 121,789,316.25 is: 170,687,414.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,899,421.25 : 121,789,316.25 = 121,789,316.25 : x
  2. Step 2: Convert to fraction form
    86,899,421.25/121,789,316.25 = 121,789,316.25/x
  3. Step 3: Cross multiply
    86,899,421.25x = 121,789,316.25 × 121,789,316.25
  4. Step 4: Simplify right side
    86,899,421.25x = 14,832,637,552,642,514
  5. Step 5: Solve for x
    x = 14,832,637,552,642,514/86,899,421.25
  6. Step 6: Final answer
    x = 170,687,414.71

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.