Home / 135,086.04-186,441.89-78,530.22

Finding the Fourth Proportional to 135,086.04, 186,441.89 and 78,530.22

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Solution

The fourth proportional to 135,086.04, 186,441.89 and 78,530.22 is: 108,385.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,086.04 : 186,441.89 = 78,530.22 : x
  2. Step 2: Convert to fraction form
    135,086.04/186,441.89 = 78,530.22/x
  3. Step 3: Cross multiply
    135,086.04x = 186,441.89 × 78,530.22
  4. Step 4: Simplify right side
    135,086.04x = 14,641,322,246.26
  5. Step 5: Solve for x
    x = 14,641,322,246.26/135,086.04
  6. Step 6: Final answer
    x = 108,385.16

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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.