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Finding the Fourth Proportional to 101,096.70, 139,513.90 and 55,774.66

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Solution

The fourth proportional to 101,096.70, 139,513.90 and 55,774.66 is: 76,969.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,096.70 : 139,513.90 = 55,774.66 : x
  2. Step 2: Convert to fraction form
    101,096.70/139,513.90 = 55,774.66/x
  3. Step 3: Cross multiply
    101,096.70x = 139,513.90 × 55,774.66
  4. Step 4: Simplify right side
    101,096.70x = 7,781,340,337.77
  5. Step 5: Solve for x
    x = 7,781,340,337.77/101,096.70
  6. Step 6: Final answer
    x = 76,969.29

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1.5x scale

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.