Home / 109,617.80-164,426.70-57,129.80

Finding the Fourth Proportional to 109,617.80, 164,426.70 and 57,129.80

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Solution

The fourth proportional to 109,617.80, 164,426.70 and 57,129.80 is: 85,694.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,617.80 : 164,426.70 = 57,129.80 : x
  2. Step 2: Convert to fraction form
    109,617.80/164,426.70 = 57,129.80/x
  3. Step 3: Cross multiply
    109,617.80x = 164,426.70 × 57,129.80
  4. Step 4: Simplify right side
    109,617.80x = 9,393,664,485.66
  5. Step 5: Solve for x
    x = 9,393,664,485.66/109,617.80
  6. Step 6: Final answer
    x = 85,694.70

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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.