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Finding the Fourth Proportional to 127,606.90, 191,438.02 and 38,858.08

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Solution

The fourth proportional to 127,606.90, 191,438.02 and 38,858.08 is: 58,295.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,606.90 : 191,438.02 = 38,858.08 : x
  2. Step 2: Convert to fraction form
    127,606.90/191,438.02 = 38,858.08/x
  3. Step 3: Cross multiply
    127,606.90x = 191,438.02 × 38,858.08
  4. Step 4: Simplify right side
    127,606.90x = 7,438,913,896.20
  5. Step 5: Solve for x
    x = 7,438,913,896.20/127,606.90
  6. Step 6: Final answer
    x = 58,295.55

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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.