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Finding the Fourth Proportional to 127,412.58, 191,127.87 and 38,673.30

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Solution

The fourth proportional to 127,412.58, 191,127.87 and 38,673.30 is: 58,012.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,412.58 : 191,127.87 = 38,673.30 : x
  2. Step 2: Convert to fraction form
    127,412.58/191,127.87 = 38,673.30/x
  3. Step 3: Cross multiply
    127,412.58x = 191,127.87 × 38,673.30
  4. Step 4: Simplify right side
    127,412.58x = 7,391,545,454.87
  5. Step 5: Solve for x
    x = 7,391,545,454.87/127,412.58
  6. Step 6: Final answer
    x = 58,012.68

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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.