Home / 137,039.26-189,115.57-76,613.26

Finding the Fourth Proportional to 137,039.26, 189,115.57 and 76,613.26

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Solution

The fourth proportional to 137,039.26, 189,115.57 and 76,613.26 is: 105,727.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,039.26 : 189,115.57 = 76,613.26 : x
  2. Step 2: Convert to fraction form
    137,039.26/189,115.57 = 76,613.26/x
  3. Step 3: Cross multiply
    137,039.26x = 189,115.57 × 76,613.26
  4. Step 4: Simplify right side
    137,039.26x = 14,488,760,334.46
  5. Step 5: Solve for x
    x = 14,488,760,334.46/137,039.26
  6. Step 6: Final answer
    x = 105,727.08

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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.