Home / 112,484.70-168,643.05-68,100.78

Finding the Fourth Proportional to 112,484.70, 168,643.05 and 68,100.78

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Solution

The fourth proportional to 112,484.70, 168,643.05 and 68,100.78 is: 102,100.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,484.70 : 168,643.05 = 68,100.78 : x
  2. Step 2: Convert to fraction form
    112,484.70/168,643.05 = 68,100.78/x
  3. Step 3: Cross multiply
    112,484.70x = 168,643.05 × 68,100.78
  4. Step 4: Simplify right side
    112,484.70x = 11,484,723,246.58
  5. Step 5: Solve for x
    x = 11,484,723,246.58/112,484.70
  6. Step 6: Final answer
    x = 102,100.31

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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.