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Finding the Fourth Proportional to 149,155.80, 205,835.02 and 82,087.80

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Solution

The fourth proportional to 149,155.80, 205,835.02 and 82,087.80 is: 113,281.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,155.80 : 205,835.02 = 82,087.80 : x
  2. Step 2: Convert to fraction form
    149,155.80/205,835.02 = 82,087.80/x
  3. Step 3: Cross multiply
    149,155.80x = 205,835.02 × 82,087.80
  4. Step 4: Simplify right side
    149,155.80x = 16,896,543,954.76
  5. Step 5: Solve for x
    x = 16,896,543,954.76/149,155.80
  6. Step 6: Final answer
    x = 113,281.17

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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.