Home / 137,712.88-206,048.04-81,583.12

Finding the Fourth Proportional to 137,712.88, 206,048.04 and 81,583.12

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Solution

The fourth proportional to 137,712.88, 206,048.04 and 81,583.12 is: 122,065.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,712.88 : 206,048.04 = 81,583.12 : x
  2. Step 2: Convert to fraction form
    137,712.88/206,048.04 = 81,583.12/x
  3. Step 3: Cross multiply
    137,712.88x = 206,048.04 × 81,583.12
  4. Step 4: Simplify right side
    137,712.88x = 16,810,041,973.08
  5. Step 5: Solve for x
    x = 16,810,041,973.08/137,712.88
  6. Step 6: Final answer
    x = 122,065.87

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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.