Home / 127,789.22-176,379.18-79,427.68

Finding the Fourth Proportional to 127,789.22, 176,379.18 and 79,427.68

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Solution

The fourth proportional to 127,789.22, 176,379.18 and 79,427.68 is: 109,628.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,789.22 : 176,379.18 = 79,427.68 : x
  2. Step 2: Convert to fraction form
    127,789.22/176,379.18 = 79,427.68/x
  3. Step 3: Cross multiply
    127,789.22x = 176,379.18 × 79,427.68
  4. Step 4: Simplify right side
    127,789.22x = 14,009,388,639.34
  5. Step 5: Solve for x
    x = 14,009,388,639.34/127,789.22
  6. Step 6: Final answer
    x = 109,628.88

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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.