Home / 134,969.25-186,257.58-78,384.27

Finding the Fourth Proportional to 134,969.25, 186,257.58 and 78,384.27

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Solution

The fourth proportional to 134,969.25, 186,257.58 and 78,384.27 is: 108,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,969.25 : 186,257.58 = 78,384.27 : x
  2. Step 2: Convert to fraction form
    134,969.25/186,257.58 = 78,384.27/x
  3. Step 3: Cross multiply
    134,969.25x = 186,257.58 × 78,384.27
  4. Step 4: Simplify right side
    134,969.25x = 14,599,664,440.27
  5. Step 5: Solve for x
    x = 14,599,664,440.27/134,969.25
  6. Step 6: Final answer
    x = 108,170.30

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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.