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Finding the Fourth Proportional to 169,937.80, 254,906.70 and 91,205.80

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Solution

The fourth proportional to 169,937.80, 254,906.70 and 91,205.80 is: 136,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,937.80 : 254,906.70 = 91,205.80 : x
  2. Step 2: Convert to fraction form
    169,937.80/254,906.70 = 91,205.80/x
  3. Step 3: Cross multiply
    169,937.80x = 254,906.70 × 91,205.80
  4. Step 4: Simplify right side
    169,937.80x = 23,248,969,498.86
  5. Step 5: Solve for x
    x = 23,248,969,498.86/169,937.80
  6. Step 6: Final answer
    x = 136,808.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.