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Finding the Fourth Proportional to 108,128.62, 162,175.32 and 37,991.56

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Solution

The fourth proportional to 108,128.62, 162,175.32 and 37,991.56 is: 56,981.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,128.62 : 162,175.32 = 37,991.56 : x
  2. Step 2: Convert to fraction form
    108,128.62/162,175.32 = 37,991.56/x
  3. Step 3: Cross multiply
    108,128.62x = 162,175.32 × 37,991.56
  4. Step 4: Simplify right side
    108,128.62x = 6,161,293,400.30
  5. Step 5: Solve for x
    x = 6,161,293,400.30/108,128.62
  6. Step 6: Final answer
    x = 56,981.15

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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.