Home / 140,534.40-210,364.20-81,193.80

Finding the Fourth Proportional to 140,534.40, 210,364.20 and 81,193.80

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Solution

The fourth proportional to 140,534.40, 210,364.20 and 81,193.80 is: 121,537.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,534.40 : 210,364.20 = 81,193.80 : x
  2. Step 2: Convert to fraction form
    140,534.40/210,364.20 = 81,193.80/x
  3. Step 3: Cross multiply
    140,534.40x = 210,364.20 × 81,193.80
  4. Step 4: Simplify right side
    140,534.40x = 17,080,268,781.96
  5. Step 5: Solve for x
    x = 17,080,268,781.96/140,534.40
  6. Step 6: Final answer
    x = 121,537.99

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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.