Home / 138,557.58-207,891.27-72,039.66

Finding the Fourth Proportional to 138,557.58, 207,891.27 and 72,039.66

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Solution

The fourth proportional to 138,557.58, 207,891.27 and 72,039.66 is: 108,088.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,557.58 : 207,891.27 = 72,039.66 : x
  2. Step 2: Convert to fraction form
    138,557.58/207,891.27 = 72,039.66/x
  3. Step 3: Cross multiply
    138,557.58x = 207,891.27 × 72,039.66
  4. Step 4: Simplify right side
    138,557.58x = 14,976,416,407.77
  5. Step 5: Solve for x
    x = 14,976,416,407.77/138,557.58
  6. Step 6: Final answer
    x = 108,088.03

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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.