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Finding the Fourth Proportional to 127,081.71, 175,393.79 and 70,511.31

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Solution

The fourth proportional to 127,081.71, 175,393.79 and 70,511.31 is: 97,317.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,081.71 : 175,393.79 = 70,511.31 : x
  2. Step 2: Convert to fraction form
    127,081.71/175,393.79 = 70,511.31/x
  3. Step 3: Cross multiply
    127,081.71x = 175,393.79 × 70,511.31
  4. Step 4: Simplify right side
    127,081.71x = 12,367,245,546.21
  5. Step 5: Solve for x
    x = 12,367,245,546.21/127,081.71
  6. Step 6: Final answer
    x = 97,317.27

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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.