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Finding the Fourth Proportional to 100,006.74, 137,949.30 and 66,015.90

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Solution

The fourth proportional to 100,006.74, 137,949.30 and 66,015.90 is: 91,062.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,006.74 : 137,949.30 = 66,015.90 : x
  2. Step 2: Convert to fraction form
    100,006.74/137,949.30 = 66,015.90/x
  3. Step 3: Cross multiply
    100,006.74x = 137,949.30 × 66,015.90
  4. Step 4: Simplify right side
    100,006.74x = 9,106,847,193.87
  5. Step 5: Solve for x
    x = 9,106,847,193.87/100,006.74
  6. Step 6: Final answer
    x = 91,062.33

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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.