Home / 137,039.97-189,116.57-76,613.97

Finding the Fourth Proportional to 137,039.97, 189,116.57 and 76,613.97

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Solution

The fourth proportional to 137,039.97, 189,116.57 and 76,613.97 is: 105,728.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,039.97 : 189,116.57 = 76,613.97 : x
  2. Step 2: Convert to fraction form
    137,039.97/189,116.57 = 76,613.97/x
  3. Step 3: Cross multiply
    137,039.97x = 189,116.57 × 76,613.97
  4. Step 4: Simplify right side
    137,039.97x = 14,488,970,837.41
  5. Step 5: Solve for x
    x = 14,488,970,837.41/137,039.97
  6. Step 6: Final answer
    x = 105,728.06

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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.