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Finding the Fourth Proportional to 113,468.70, 169,997.73 and 81,706.80

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Solution

The fourth proportional to 113,468.70, 169,997.73 and 81,706.80 is: 122,412.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,468.70 : 169,997.73 = 81,706.80 : x
  2. Step 2: Convert to fraction form
    113,468.70/169,997.73 = 81,706.80/x
  3. Step 3: Cross multiply
    113,468.70x = 169,997.73 × 81,706.80
  4. Step 4: Simplify right side
    113,468.70x = 13,889,970,525.56
  5. Step 5: Solve for x
    x = 13,889,970,525.56/113,468.70
  6. Step 6: Final answer
    x = 122,412.35

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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.