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Finding the Fourth Proportional to 127,072.74, 175,394.79 and 79,297.86

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Solution

The fourth proportional to 127,072.74, 175,394.79 and 79,297.86 is: 109,452.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,072.74 : 175,394.79 = 79,297.86 : x
  2. Step 2: Convert to fraction form
    127,072.74/175,394.79 = 79,297.86/x
  3. Step 3: Cross multiply
    127,072.74x = 175,394.79 × 79,297.86
  4. Step 4: Simplify right side
    127,072.74x = 13,908,431,502.15
  5. Step 5: Solve for x
    x = 13,908,431,502.15/127,072.74
  6. Step 6: Final answer
    x = 109,452.52

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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.