Home / 120,837.32-166,752.06-67,121

Finding the Fourth Proportional to 120,837.32, 166,752.06 and 67,121

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Solution

The fourth proportional to 120,837.32, 166,752.06 and 67,121 is: 92,625.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,837.32 : 166,752.06 = 67,121 : x
  2. Step 2: Convert to fraction form
    120,837.32/166,752.06 = 67,121/x
  3. Step 3: Cross multiply
    120,837.32x = 166,752.06 × 67,121
  4. Step 4: Simplify right side
    120,837.32x = 11,192,565,019.26
  5. Step 5: Solve for x
    x = 11,192,565,019.26/120,837.32
  6. Step 6: Final answer
    x = 92,625.07

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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.