Home / 259,885.50-389,983.77-112,141.50

Finding the Fourth Proportional to 259,885.50, 389,983.77 and 112,141.50

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Solution

The fourth proportional to 259,885.50, 389,983.77 and 112,141.50 is: 168,279.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,885.50 : 389,983.77 = 112,141.50 : x
  2. Step 2: Convert to fraction form
    259,885.50/389,983.77 = 112,141.50/x
  3. Step 3: Cross multiply
    259,885.50x = 389,983.77 × 112,141.50
  4. Step 4: Simplify right side
    259,885.50x = 43,733,364,943.46
  5. Step 5: Solve for x
    x = 43,733,364,943.46/259,885.50
  6. Step 6: Final answer
    x = 168,279.36

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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.