Home / 149,864.98-206,811.23-81,880.50

Finding the Fourth Proportional to 149,864.98, 206,811.23 and 81,880.50

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Solution

The fourth proportional to 149,864.98, 206,811.23 and 81,880.50 is: 112,993.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,864.98 : 206,811.23 = 81,880.50 : x
  2. Step 2: Convert to fraction form
    149,864.98/206,811.23 = 81,880.50/x
  3. Step 3: Cross multiply
    149,864.98x = 206,811.23 × 81,880.50
  4. Step 4: Simplify right side
    149,864.98x = 16,933,806,088.66
  5. Step 5: Solve for x
    x = 16,933,806,088.66/149,864.98
  6. Step 6: Final answer
    x = 112,993.75

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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.