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Finding the Fourth Proportional to 121,995.91, 168,354.32 and 68,280.92

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Solution

The fourth proportional to 121,995.91, 168,354.32 and 68,280.92 is: 94,227.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,995.91 : 168,354.32 = 68,280.92 : x
  2. Step 2: Convert to fraction form
    121,995.91/168,354.32 = 68,280.92/x
  3. Step 3: Cross multiply
    121,995.91x = 168,354.32 × 68,280.92
  4. Step 4: Simplify right side
    121,995.91x = 11,495,388,826.84
  5. Step 5: Solve for x
    x = 11,495,388,826.84/121,995.91
  6. Step 6: Final answer
    x = 94,227.66

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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.