Home / 122,142.74-168,561.81-68,428.19

Finding the Fourth Proportional to 122,142.74, 168,561.81 and 68,428.19

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Solution

The fourth proportional to 122,142.74, 168,561.81 and 68,428.19 is: 94,433.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,142.74 : 168,561.81 = 68,428.19 : x
  2. Step 2: Convert to fraction form
    122,142.74/168,561.81 = 68,428.19/x
  3. Step 3: Cross multiply
    122,142.74x = 168,561.81 × 68,428.19
  4. Step 4: Simplify right side
    122,142.74x = 11,534,379,982.83
  5. Step 5: Solve for x
    x = 11,534,379,982.83/122,142.74
  6. Step 6: Final answer
    x = 94,433.61

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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.