Home / 122,115.81-168,518.82-68,401.33

Finding the Fourth Proportional to 122,115.81, 168,518.82 and 68,401.33

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Solution

The fourth proportional to 122,115.81, 168,518.82 and 68,401.33 is: 94,393.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,115.81 : 168,518.82 = 68,401.33 : x
  2. Step 2: Convert to fraction form
    122,115.81/168,518.82 = 68,401.33/x
  3. Step 3: Cross multiply
    122,115.81x = 168,518.82 × 68,401.33
  4. Step 4: Simplify right side
    122,115.81x = 11,526,911,418.03
  5. Step 5: Solve for x
    x = 11,526,911,418.03/122,115.81
  6. Step 6: Final answer
    x = 94,393.28

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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.