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Finding the Fourth Proportional to 89,904.97, 134,173.84 and 79,940.71

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Solution

The fourth proportional to 89,904.97, 134,173.84 and 79,940.71 is: 119,303.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,904.97 : 134,173.84 = 79,940.71 : x
  2. Step 2: Convert to fraction form
    89,904.97/134,173.84 = 79,940.71/x
  3. Step 3: Cross multiply
    89,904.97x = 134,173.84 × 79,940.71
  4. Step 4: Simplify right side
    89,904.97x = 10,725,952,033.03
  5. Step 5: Solve for x
    x = 10,725,952,033.03/89,904.97
  6. Step 6: Final answer
    x = 119,303.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.