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Finding the Fourth Proportional to 171,425.59, 236,630.78 and 103,445.43

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Solution

The fourth proportional to 171,425.59, 236,630.78 and 103,445.43 is: 142,792.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,425.59 : 236,630.78 = 103,445.43 : x
  2. Step 2: Convert to fraction form
    171,425.59/236,630.78 = 103,445.43/x
  3. Step 3: Cross multiply
    171,425.59x = 236,630.78 × 103,445.43
  4. Step 4: Simplify right side
    171,425.59x = 24,478,372,788.34
  5. Step 5: Solve for x
    x = 24,478,372,788.34/171,425.59
  6. Step 6: Final answer
    x = 142,792.99

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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.