Home / 127,791.22-176,381.94-79,429.68

Finding the Fourth Proportional to 127,791.22, 176,381.94 and 79,429.68

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Solution

The fourth proportional to 127,791.22, 176,381.94 and 79,429.68 is: 109,631.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,791.22 : 176,381.94 = 79,429.68 : x
  2. Step 2: Convert to fraction form
    127,791.22/176,381.94 = 79,429.68/x
  3. Step 3: Cross multiply
    127,791.22x = 176,381.94 × 79,429.68
  4. Step 4: Simplify right side
    127,791.22x = 14,009,961,051.98
  5. Step 5: Solve for x
    x = 14,009,961,051.98/127,791.22
  6. Step 6: Final answer
    x = 109,631.64

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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.