Home / 134,939.04-186,194.88-78,340.56

Finding the Fourth Proportional to 134,939.04, 186,194.88 and 78,340.56

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Solution

The fourth proportional to 134,939.04, 186,194.88 and 78,340.56 is: 108,097.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,939.04 : 186,194.88 = 78,340.56 : x
  2. Step 2: Convert to fraction form
    134,939.04/186,194.88 = 78,340.56/x
  3. Step 3: Cross multiply
    134,939.04x = 186,194.88 × 78,340.56
  4. Step 4: Simplify right side
    134,939.04x = 14,586,611,168.33
  5. Step 5: Solve for x
    x = 14,586,611,168.33/134,939.04
  6. Step 6: Final answer
    x = 108,097.78

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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.