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Finding the Fourth Proportional to 172,652.31, 259,013.70 and 72,812.32

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Solution

The fourth proportional to 172,652.31, 259,013.70 and 72,812.32 is: 109,233.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,652.31 : 259,013.70 = 72,812.32 : x
  2. Step 2: Convert to fraction form
    172,652.31/259,013.70 = 72,812.32/x
  3. Step 3: Cross multiply
    172,652.31x = 259,013.70 × 72,812.32
  4. Step 4: Simplify right side
    172,652.31x = 18,859,387,761.25
  5. Step 5: Solve for x
    x = 18,859,387,761.25/172,652.31
  6. Step 6: Final answer
    x = 109,233.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.