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Finding the Fourth Proportional to 127,328, 191,012.58 and 43,093.28

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Solution

The fourth proportional to 127,328, 191,012.58 and 43,093.28 is: 64,646.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,328 : 191,012.58 = 43,093.28 : x
  2. Step 2: Convert to fraction form
    127,328/191,012.58 = 43,093.28/x
  3. Step 3: Cross multiply
    127,328x = 191,012.58 × 43,093.28
  4. Step 4: Simplify right side
    127,328x = 8,231,358,593.46
  5. Step 5: Solve for x
    x = 8,231,358,593.46/127,328
  6. Step 6: Final answer
    x = 64,646.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.