Home / 137,162.07-189,279.32-76,733.78

Finding the Fourth Proportional to 137,162.07, 189,279.32 and 76,733.78

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Solution

The fourth proportional to 137,162.07, 189,279.32 and 76,733.78 is: 105,890.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,162.07 : 189,279.32 = 76,733.78 : x
  2. Step 2: Convert to fraction form
    137,162.07/189,279.32 = 76,733.78/x
  3. Step 3: Cross multiply
    137,162.07x = 189,279.32 × 76,733.78
  4. Step 4: Simplify right side
    137,162.07x = 14,524,116,369.36
  5. Step 5: Solve for x
    x = 14,524,116,369.36/137,162.07
  6. Step 6: Final answer
    x = 105,890.18

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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.