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Finding the Third Proportional to 78,612.75 and 170,514

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Solution

The third proportional to 78,612.75 and 170,514 is: 369,851.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,612.75 : 170,514 = 170,514 : x
  2. Step 2: Convert to fraction form
    78,612.75/170,514 = 170,514/x
  3. Step 3: Cross multiply
    78,612.75x = 170,514 × 170,514
  4. Step 4: Simplify right side
    78,612.75x = 29,075,024,196
  5. Step 5: Solve for x
    x = 29,075,024,196/78,612.75
  6. Step 6: Final answer
    x = 369,851.25

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.