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Finding the Fourth Proportional to 94,172.88, 129,674.40 and 81,403.44

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Solution

The fourth proportional to 94,172.88, 129,674.40 and 81,403.44 is: 112,091.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,172.88 : 129,674.40 = 81,403.44 : x
  2. Step 2: Convert to fraction form
    94,172.88/129,674.40 = 81,403.44/x
  3. Step 3: Cross multiply
    94,172.88x = 129,674.40 × 81,403.44
  4. Step 4: Simplify right side
    94,172.88x = 10,555,942,239.94
  5. Step 5: Solve for x
    x = 10,555,942,239.94/94,172.88
  6. Step 6: Final answer
    x = 112,091.11

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1.5x scale

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.