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Finding the Fourth Proportional to 171,627.30, 257,440.95 and 108,641.70

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Solution

The fourth proportional to 171,627.30, 257,440.95 and 108,641.70 is: 162,962.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,627.30 : 257,440.95 = 108,641.70 : x
  2. Step 2: Convert to fraction form
    171,627.30/257,440.95 = 108,641.70/x
  3. Step 3: Cross multiply
    171,627.30x = 257,440.95 × 108,641.70
  4. Step 4: Simplify right side
    171,627.30x = 27,968,822,457.62
  5. Step 5: Solve for x
    x = 27,968,822,457.62/171,627.30
  6. Step 6: Final answer
    x = 162,962.55

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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.