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Finding the Fourth Proportional to 171,776.64, 257,738.40 and 88,728.96

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Solution

The fourth proportional to 171,776.64, 257,738.40 and 88,728.96 is: 133,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,776.64 : 257,738.40 = 88,728.96 : x
  2. Step 2: Convert to fraction form
    171,776.64/257,738.40 = 88,728.96/x
  3. Step 3: Cross multiply
    171,776.64x = 257,738.40 × 88,728.96
  4. Step 4: Simplify right side
    171,776.64x = 22,868,860,184.06
  5. Step 5: Solve for x
    x = 22,868,860,184.06/171,776.64
  6. Step 6: Final answer
    x = 133,131.37

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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.