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Finding the Fourth Proportional to 91,841.28, 137,786.40 and 73,191.84

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Solution

The fourth proportional to 91,841.28, 137,786.40 and 73,191.84 is: 109,807.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,841.28 : 137,786.40 = 73,191.84 : x
  2. Step 2: Convert to fraction form
    91,841.28/137,786.40 = 73,191.84/x
  3. Step 3: Cross multiply
    91,841.28x = 137,786.40 × 73,191.84
  4. Step 4: Simplify right side
    91,841.28x = 10,084,840,142.98
  5. Step 5: Solve for x
    x = 10,084,840,142.98/91,841.28
  6. Step 6: Final answer
    x = 109,807.27

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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.