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Finding the Fourth Proportional to 127,488.94, 191,237.46 and 38,743.21

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Solution

The fourth proportional to 127,488.94, 191,237.46 and 38,743.21 is: 58,116.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,488.94 : 191,237.46 = 38,743.21 : x
  2. Step 2: Convert to fraction form
    127,488.94/191,237.46 = 38,743.21/x
  3. Step 3: Cross multiply
    127,488.94x = 191,237.46 × 38,743.21
  4. Step 4: Simplify right side
    127,488.94x = 7,409,153,166.41
  5. Step 5: Solve for x
    x = 7,409,153,166.41/127,488.94
  6. Step 6: Final answer
    x = 58,116.05

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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.