Home / 109,815.30-164,917.35-84,915.90

Finding the Fourth Proportional to 109,815.30, 164,917.35 and 84,915.90

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Solution

The fourth proportional to 109,815.30, 164,917.35 and 84,915.90 is: 127,524.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,815.30 : 164,917.35 = 84,915.90 : x
  2. Step 2: Convert to fraction form
    109,815.30/164,917.35 = 84,915.90/x
  3. Step 3: Cross multiply
    109,815.30x = 164,917.35 × 84,915.90
  4. Step 4: Simplify right side
    109,815.30x = 14,004,105,200.87
  5. Step 5: Solve for x
    x = 14,004,105,200.87/109,815.30
  6. Step 6: Final answer
    x = 127,524.17

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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.