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Finding the Fourth Proportional to 171,352.90, 256,845.48 and 71,437.78

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Solution

The fourth proportional to 171,352.90, 256,845.48 and 71,437.78 is: 107,080.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,352.90 : 256,845.48 = 71,437.78 : x
  2. Step 2: Convert to fraction form
    171,352.90/256,845.48 = 71,437.78/x
  3. Step 3: Cross multiply
    171,352.90x = 256,845.48 × 71,437.78
  4. Step 4: Simplify right side
    171,352.90x = 18,348,470,894.23
  5. Step 5: Solve for x
    x = 18,348,470,894.23/171,352.90
  6. Step 6: Final answer
    x = 107,080.01

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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.