Home / 118,896.40-164,072.10-71,121.52

Finding the Fourth Proportional to 118,896.40, 164,072.10 and 71,121.52

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Solution

The fourth proportional to 118,896.40, 164,072.10 and 71,121.52 is: 98,144.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,896.40 : 164,072.10 = 71,121.52 : x
  2. Step 2: Convert to fraction form
    118,896.40/164,072.10 = 71,121.52/x
  3. Step 3: Cross multiply
    118,896.40x = 164,072.10 × 71,121.52
  4. Step 4: Simplify right side
    118,896.40x = 11,669,057,141.59
  5. Step 5: Solve for x
    x = 11,669,057,141.59/118,896.40
  6. Step 6: Final answer
    x = 98,144.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.