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Finding the Third Proportional to 130,420.13 and 198,369

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Solution

The third proportional to 130,420.13 and 198,369 is: 301,719.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,420.13 : 198,369 = 198,369 : x
  2. Step 2: Convert to fraction form
    130,420.13/198,369 = 198,369/x
  3. Step 3: Cross multiply
    130,420.13x = 198,369 × 198,369
  4. Step 4: Simplify right side
    130,420.13x = 39,350,260,161
  5. Step 5: Solve for x
    x = 39,350,260,161/130,420.13
  6. Step 6: Final answer
    x = 301,719.23

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.