Home / 109,872.70-164,809.05-90,845.80

Finding the Fourth Proportional to 109,872.70, 164,809.05 and 90,845.80

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Solution

The fourth proportional to 109,872.70, 164,809.05 and 90,845.80 is: 136,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,872.70 : 164,809.05 = 90,845.80 : x
  2. Step 2: Convert to fraction form
    109,872.70/164,809.05 = 90,845.80/x
  3. Step 3: Cross multiply
    109,872.70x = 164,809.05 × 90,845.80
  4. Step 4: Simplify right side
    109,872.70x = 14,972,209,994.49
  5. Step 5: Solve for x
    x = 14,972,209,994.49/109,872.70
  6. Step 6: Final answer
    x = 136,268.70

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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.