Home / 140,214.30-210,540.15-81,165.30

Finding the Fourth Proportional to 140,214.30, 210,540.15 and 81,165.30

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Solution

The fourth proportional to 140,214.30, 210,540.15 and 81,165.30 is: 121,874.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,214.30 : 210,540.15 = 81,165.30 : x
  2. Step 2: Convert to fraction form
    140,214.30/210,540.15 = 81,165.30/x
  3. Step 3: Cross multiply
    140,214.30x = 210,540.15 × 81,165.30
  4. Step 4: Simplify right side
    140,214.30x = 17,088,554,436.80
  5. Step 5: Solve for x
    x = 17,088,554,436.80/140,214.30
  6. Step 6: Final answer
    x = 121,874.55

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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.