Home / 135,170.29-186,558.15-78,614.47

Finding the Fourth Proportional to 135,170.29, 186,558.15 and 78,614.47

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Solution

The fourth proportional to 135,170.29, 186,558.15 and 78,614.47 is: 108,501.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,170.29 : 186,558.15 = 78,614.47 : x
  2. Step 2: Convert to fraction form
    135,170.29/186,558.15 = 78,614.47/x
  3. Step 3: Cross multiply
    135,170.29x = 186,558.15 × 78,614.47
  4. Step 4: Simplify right side
    135,170.29x = 14,666,170,086.43
  5. Step 5: Solve for x
    x = 14,666,170,086.43/135,170.29
  6. Step 6: Final answer
    x = 108,501.43

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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.