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Finding the Fourth Proportional to 216,602.16, 298,910.16 and 121,108.56

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Solution

The fourth proportional to 216,602.16, 298,910.16 and 121,108.56 is: 167,129.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,602.16 : 298,910.16 = 121,108.56 : x
  2. Step 2: Convert to fraction form
    216,602.16/298,910.16 = 121,108.56/x
  3. Step 3: Cross multiply
    216,602.16x = 298,910.16 × 121,108.56
  4. Step 4: Simplify right side
    216,602.16x = 36,200,579,046.97
  5. Step 5: Solve for x
    x = 36,200,579,046.97/216,602.16
  6. Step 6: Final answer
    x = 167,129.35

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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.