Home / 121,287.16-182,135.22-79,239.16

Finding the Fourth Proportional to 121,287.16, 182,135.22 and 79,239.16

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Solution

The fourth proportional to 121,287.16, 182,135.22 and 79,239.16 is: 118,992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,287.16 : 182,135.22 = 79,239.16 : x
  2. Step 2: Convert to fraction form
    121,287.16/182,135.22 = 79,239.16/x
  3. Step 3: Cross multiply
    121,287.16x = 182,135.22 × 79,239.16
  4. Step 4: Simplify right side
    121,287.16x = 14,432,241,839.22
  5. Step 5: Solve for x
    x = 14,432,241,839.22/121,287.16
  6. Step 6: Final answer
    x = 118,992.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.