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Finding the Fourth Proportional to 114,485.53, 157,844.85 and 81,818.98

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Solution

The fourth proportional to 114,485.53, 157,844.85 and 81,818.98 is: 112,806.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,485.53 : 157,844.85 = 81,818.98 : x
  2. Step 2: Convert to fraction form
    114,485.53/157,844.85 = 81,818.98/x
  3. Step 3: Cross multiply
    114,485.53x = 157,844.85 × 81,818.98
  4. Step 4: Simplify right side
    114,485.53x = 12,914,704,625.25
  5. Step 5: Solve for x
    x = 12,914,704,625.25/114,485.53
  6. Step 6: Final answer
    x = 112,806.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.