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Finding the Fourth Proportional to 171,517.96, 257,276.94 and 78,050.44

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Solution

The fourth proportional to 171,517.96, 257,276.94 and 78,050.44 is: 117,075.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,517.96 : 257,276.94 = 78,050.44 : x
  2. Step 2: Convert to fraction form
    171,517.96/257,276.94 = 78,050.44/x
  3. Step 3: Cross multiply
    171,517.96x = 257,276.94 × 78,050.44
  4. Step 4: Simplify right side
    171,517.96x = 20,080,578,368.85
  5. Step 5: Solve for x
    x = 20,080,578,368.85/171,517.96
  6. Step 6: Final answer
    x = 117,075.66

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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.