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Finding the Fourth Proportional to 121,993.74, 168,352.14 and 68,283.72

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Solution

The fourth proportional to 121,993.74, 168,352.14 and 68,283.72 is: 94,231.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,993.74 : 168,352.14 = 68,283.72 : x
  2. Step 2: Convert to fraction form
    121,993.74/168,352.14 = 68,283.72/x
  3. Step 3: Cross multiply
    121,993.74x = 168,352.14 × 68,283.72
  4. Step 4: Simplify right side
    121,993.74x = 11,495,710,389.16
  5. Step 5: Solve for x
    x = 11,495,710,389.16/121,993.74
  6. Step 6: Final answer
    x = 94,231.97

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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.