Home / 91,593.36-137,392.74-78,181.80

Finding the Fourth Proportional to 91,593.36, 137,392.74 and 78,181.80

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Solution

The fourth proportional to 91,593.36, 137,392.74 and 78,181.80 is: 117,275.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,593.36 : 137,392.74 = 78,181.80 : x
  2. Step 2: Convert to fraction form
    91,593.36/137,392.74 = 78,181.80/x
  3. Step 3: Cross multiply
    91,593.36x = 137,392.74 × 78,181.80
  4. Step 4: Simplify right side
    91,593.36x = 10,741,611,033.17
  5. Step 5: Solve for x
    x = 10,741,611,033.17/91,593.36
  6. Step 6: Final answer
    x = 117,275.00

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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.