Home / 420,737.13-631,105.70-105,194.04

Finding the Fourth Proportional to 420,737.13, 631,105.70 and 105,194.04

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Solution

The fourth proportional to 420,737.13, 631,105.70 and 105,194.04 is: 157,791.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,737.13 : 631,105.70 = 105,194.04 : x
  2. Step 2: Convert to fraction form
    420,737.13/631,105.70 = 105,194.04/x
  3. Step 3: Cross multiply
    420,737.13x = 631,105.70 × 105,194.04
  4. Step 4: Simplify right side
    420,737.13x = 66,388,557,724.06
  5. Step 5: Solve for x
    x = 66,388,557,724.06/420,737.13
  6. Step 6: Final answer
    x = 157,791.06

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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.