Home / 112,141.15-168,021.31-67,674.48

Finding the Fourth Proportional to 112,141.15, 168,021.31 and 67,674.48

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Solution

The fourth proportional to 112,141.15, 168,021.31 and 67,674.48 is: 101,396.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,141.15 : 168,021.31 = 67,674.48 : x
  2. Step 2: Convert to fraction form
    112,141.15/168,021.31 = 67,674.48/x
  3. Step 3: Cross multiply
    112,141.15x = 168,021.31 × 67,674.48
  4. Step 4: Simplify right side
    112,141.15x = 11,370,754,783.17
  5. Step 5: Solve for x
    x = 11,370,754,783.17/112,141.15
  6. Step 6: Final answer
    x = 101,396.81

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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.