Home / 137,218.24-205,498.77-87,141.61

Finding the Fourth Proportional to 137,218.24, 205,498.77 and 87,141.61

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Solution

The fourth proportional to 137,218.24, 205,498.77 and 87,141.61 is: 130,503.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,218.24 : 205,498.77 = 87,141.61 : x
  2. Step 2: Convert to fraction form
    137,218.24/205,498.77 = 87,141.61/x
  3. Step 3: Cross multiply
    137,218.24x = 205,498.77 × 87,141.61
  4. Step 4: Simplify right side
    137,218.24x = 17,907,493,670.82
  5. Step 5: Solve for x
    x = 17,907,493,670.82/137,218.24
  6. Step 6: Final answer
    x = 130,503.74

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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.