Home / 138,828.80-208,121.70-94,311.20

Finding the Fourth Proportional to 138,828.80, 208,121.70 and 94,311.20

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Solution

The fourth proportional to 138,828.80, 208,121.70 and 94,311.20 is: 141,384.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,828.80 : 208,121.70 = 94,311.20 : x
  2. Step 2: Convert to fraction form
    138,828.80/208,121.70 = 94,311.20/x
  3. Step 3: Cross multiply
    138,828.80x = 208,121.70 × 94,311.20
  4. Step 4: Simplify right side
    138,828.80x = 19,628,207,273.04
  5. Step 5: Solve for x
    x = 19,628,207,273.04/138,828.80
  6. Step 6: Final answer
    x = 141,384.26

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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.