Home / 138,923.46-191,714.37-78,494.22

Finding the Fourth Proportional to 138,923.46, 191,714.37 and 78,494.22

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Solution

The fourth proportional to 138,923.46, 191,714.37 and 78,494.22 is: 108,322.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,923.46 : 191,714.37 = 78,494.22 : x
  2. Step 2: Convert to fraction form
    138,923.46/191,714.37 = 78,494.22/x
  3. Step 3: Cross multiply
    138,923.46x = 191,714.37 × 78,494.22
  4. Step 4: Simplify right side
    138,923.46x = 15,048,469,935.94
  5. Step 5: Solve for x
    x = 15,048,469,935.94/138,923.46
  6. Step 6: Final answer
    x = 108,322.02

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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.