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Finding the Fourth Proportional to 121,763.83, 168,033.53 and 68,048.81

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Solution

The fourth proportional to 121,763.83, 168,033.53 and 68,048.81 is: 93,907.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,763.83 : 168,033.53 = 68,048.81 : x
  2. Step 2: Convert to fraction form
    121,763.83/168,033.53 = 68,048.81/x
  3. Step 3: Cross multiply
    121,763.83x = 168,033.53 × 68,048.81
  4. Step 4: Simplify right side
    121,763.83x = 11,434,482,006.56
  5. Step 5: Solve for x
    x = 11,434,482,006.56/121,763.83
  6. Step 6: Final answer
    x = 93,907.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.