Home / 121,995.72-168,354.09-68,280.75

Finding the Fourth Proportional to 121,995.72, 168,354.09 and 68,280.75

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Solution

The fourth proportional to 121,995.72, 168,354.09 and 68,280.75 is: 94,227.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,995.72 : 168,354.09 = 68,280.75 : x
  2. Step 2: Convert to fraction form
    121,995.72/168,354.09 = 68,280.75/x
  3. Step 3: Cross multiply
    121,995.72x = 168,354.09 × 68,280.75
  4. Step 4: Simplify right side
    121,995.72x = 11,495,343,530.77
  5. Step 5: Solve for x
    x = 11,495,343,530.77/121,995.72
  6. Step 6: Final answer
    x = 94,227.43

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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.