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Finding the Fourth Proportional to 169,783, 254,690.70 and 69,949.96

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Solution

The fourth proportional to 169,783, 254,690.70 and 69,949.96 is: 104,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,783 : 254,690.70 = 69,949.96 : x
  2. Step 2: Convert to fraction form
    169,783/254,690.70 = 69,949.96/x
  3. Step 3: Cross multiply
    169,783x = 254,690.70 × 69,949.96
  4. Step 4: Simplify right side
    169,783x = 17,815,604,277.37
  5. Step 5: Solve for x
    x = 17,815,604,277.37/169,783
  6. Step 6: Final answer
    x = 104,931.61

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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.