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Finding the Fourth Proportional to 121,399.75, 167,533.75 and 67,678.83

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Solution

The fourth proportional to 121,399.75, 167,533.75 and 67,678.83 is: 93,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,399.75 : 167,533.75 = 67,678.83 : x
  2. Step 2: Convert to fraction form
    121,399.75/167,533.75 = 67,678.83/x
  3. Step 3: Cross multiply
    121,399.75x = 167,533.75 × 67,678.83
  4. Step 4: Simplify right side
    121,399.75x = 11,338,488,185.51
  5. Step 5: Solve for x
    x = 11,338,488,185.51/121,399.75
  6. Step 6: Final answer
    x = 93,397.95

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1.5x scale

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.