Home / 158,072.96-218,220-122,181.92

Finding the Fourth Proportional to 158,072.96, 218,220 and 122,181.92

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Solution

The fourth proportional to 158,072.96, 218,220 and 122,181.92 is: 168,672.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,072.96 : 218,220 = 122,181.92 : x
  2. Step 2: Convert to fraction form
    158,072.96/218,220 = 122,181.92/x
  3. Step 3: Cross multiply
    158,072.96x = 218,220 × 122,181.92
  4. Step 4: Simplify right side
    158,072.96x = 26,662,538,582.40
  5. Step 5: Solve for x
    x = 26,662,538,582.40/158,072.96
  6. Step 6: Final answer
    x = 168,672.36

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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.