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Finding the Fourth Proportional to 127,401.40, 191,102.10 and 38,650.60

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Solution

The fourth proportional to 127,401.40, 191,102.10 and 38,650.60 is: 57,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,401.40 : 191,102.10 = 38,650.60 : x
  2. Step 2: Convert to fraction form
    127,401.40/191,102.10 = 38,650.60/x
  3. Step 3: Cross multiply
    127,401.40x = 191,102.10 × 38,650.60
  4. Step 4: Simplify right side
    127,401.40x = 7,386,210,826.26
  5. Step 5: Solve for x
    x = 7,386,210,826.26/127,401.40
  6. Step 6: Final answer
    x = 57,975.90

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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.