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Finding the Fourth Proportional to 101,331.60, 139,872.60 and 69,605.52

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Solution

The fourth proportional to 101,331.60, 139,872.60 and 69,605.52 is: 96,079.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,331.60 : 139,872.60 = 69,605.52 : x
  2. Step 2: Convert to fraction form
    101,331.60/139,872.60 = 69,605.52/x
  3. Step 3: Cross multiply
    101,331.60x = 139,872.60 × 69,605.52
  4. Step 4: Simplify right side
    101,331.60x = 9,735,905,056.75
  5. Step 5: Solve for x
    x = 9,735,905,056.75/101,331.60
  6. Step 6: Final answer
    x = 96,079.65

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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.