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Finding the Third Proportional to 114,390 and 172,485

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Solution

The third proportional to 114,390 and 172,485 is: 260,084.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,390 : 172,485 = 172,485 : x
  2. Step 2: Convert to fraction form
    114,390/172,485 = 172,485/x
  3. Step 3: Cross multiply
    114,390x = 172,485 × 172,485
  4. Step 4: Simplify right side
    114,390x = 29,751,075,225
  5. Step 5: Solve for x
    x = 29,751,075,225/114,390
  6. Step 6: Final answer
    x = 260,084.58

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.