Home / 106,221.40-159,140.10-61,811.80

Finding the Fourth Proportional to 106,221.40, 159,140.10 and 61,811.80

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Solution

The fourth proportional to 106,221.40, 159,140.10 and 61,811.80 is: 92,605.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,221.40 : 159,140.10 = 61,811.80 : x
  2. Step 2: Convert to fraction form
    106,221.40/159,140.10 = 61,811.80/x
  3. Step 3: Cross multiply
    106,221.40x = 159,140.10 × 61,811.80
  4. Step 4: Simplify right side
    106,221.40x = 9,836,736,033.18
  5. Step 5: Solve for x
    x = 9,836,736,033.18/106,221.40
  6. Step 6: Final answer
    x = 92,605.97

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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.