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Finding the Third Proportional to 115,246.50 and 155,358

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Solution

The third proportional to 115,246.50 and 155,358 is: 209,430.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,246.50 : 155,358 = 155,358 : x
  2. Step 2: Convert to fraction form
    115,246.50/155,358 = 155,358/x
  3. Step 3: Cross multiply
    115,246.50x = 155,358 × 155,358
  4. Step 4: Simplify right side
    115,246.50x = 24,136,108,164
  5. Step 5: Solve for x
    x = 24,136,108,164/115,246.50
  6. Step 6: Final answer
    x = 209,430.29

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.