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Finding the Fourth Proportional to 172,737.70, 238,372.41 and 105,669.70

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Solution

The fourth proportional to 172,737.70, 238,372.41 and 105,669.70 is: 145,820.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,737.70 : 238,372.41 = 105,669.70 : x
  2. Step 2: Convert to fraction form
    172,737.70/238,372.41 = 105,669.70/x
  3. Step 3: Cross multiply
    172,737.70x = 238,372.41 × 105,669.70
  4. Step 4: Simplify right side
    172,737.70x = 25,188,741,052.98
  5. Step 5: Solve for x
    x = 25,188,741,052.98/172,737.70
  6. Step 6: Final answer
    x = 145,820.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.