Home / 121,888.86-168,205.38-68,173.75

Finding the Fourth Proportional to 121,888.86, 168,205.38 and 68,173.75

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Solution

The fourth proportional to 121,888.86, 168,205.38 and 68,173.75 is: 94,079.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,888.86 : 168,205.38 = 68,173.75 : x
  2. Step 2: Convert to fraction form
    121,888.86/168,205.38 = 68,173.75/x
  3. Step 3: Cross multiply
    121,888.86x = 168,205.38 × 68,173.75
  4. Step 4: Simplify right side
    121,888.86x = 11,467,191,524.78
  5. Step 5: Solve for x
    x = 11,467,191,524.78/121,888.86
  6. Step 6: Final answer
    x = 94,079.08

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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.