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Finding the Fourth Proportional to 171,089.21, 256,635.85 and 103,635.97

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Solution

The fourth proportional to 171,089.21, 256,635.85 and 103,635.97 is: 155,455.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,089.21 : 256,635.85 = 103,635.97 : x
  2. Step 2: Convert to fraction form
    171,089.21/256,635.85 = 103,635.97/x
  3. Step 3: Cross multiply
    171,089.21x = 256,635.85 × 103,635.97
  4. Step 4: Simplify right side
    171,089.21x = 26,596,705,510.61
  5. Step 5: Solve for x
    x = 26,596,705,510.61/171,089.21
  6. Step 6: Final answer
    x = 155,455.19

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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.