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Finding the Fourth Proportional to 101,270.67, 139,749.28 and 58,246.90

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Solution

The fourth proportional to 101,270.67, 139,749.28 and 58,246.90 is: 80,378.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,270.67 : 139,749.28 = 58,246.90 : x
  2. Step 2: Convert to fraction form
    101,270.67/139,749.28 = 58,246.90/x
  3. Step 3: Cross multiply
    101,270.67x = 139,749.28 × 58,246.90
  4. Step 4: Simplify right side
    101,270.67x = 8,139,962,337.23
  5. Step 5: Solve for x
    x = 8,139,962,337.23/101,270.67
  6. Step 6: Final answer
    x = 80,378.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.