Home / 121,888.62-168,205.30-68,173.60

Finding the Fourth Proportional to 121,888.62, 168,205.30 and 68,173.60

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Solution

The fourth proportional to 121,888.62, 168,205.30 and 68,173.60 is: 94,079.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,888.62 : 168,205.30 = 68,173.60 : x
  2. Step 2: Convert to fraction form
    121,888.62/168,205.30 = 68,173.60/x
  3. Step 3: Cross multiply
    121,888.62x = 168,205.30 × 68,173.60
  4. Step 4: Simplify right side
    121,888.62x = 11,467,160,840.08
  5. Step 5: Solve for x
    x = 11,467,160,840.08/121,888.62
  6. Step 6: Final answer
    x = 94,079.01

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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.