Home / 106,431.40-159,474.30-66,917.80

Finding the Fourth Proportional to 106,431.40, 159,474.30 and 66,917.80

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Solution

The fourth proportional to 106,431.40, 159,474.30 and 66,917.80 is: 100,268.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,431.40 : 159,474.30 = 66,917.80 : x
  2. Step 2: Convert to fraction form
    106,431.40/159,474.30 = 66,917.80/x
  3. Step 3: Cross multiply
    106,431.40x = 159,474.30 × 66,917.80
  4. Step 4: Simplify right side
    106,431.40x = 10,671,669,312.54
  5. Step 5: Solve for x
    x = 10,671,669,312.54/106,431.40
  6. Step 6: Final answer
    x = 100,268.05

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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.