Home / 102,169.02-140,982.21-56,839.80

Finding the Fourth Proportional to 102,169.02, 140,982.21 and 56,839.80

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Solution

The fourth proportional to 102,169.02, 140,982.21 and 56,839.80 is: 78,432.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,169.02 : 140,982.21 = 56,839.80 : x
  2. Step 2: Convert to fraction form
    102,169.02/140,982.21 = 56,839.80/x
  3. Step 3: Cross multiply
    102,169.02x = 140,982.21 × 56,839.80
  4. Step 4: Simplify right side
    102,169.02x = 8,013,400,619.96
  5. Step 5: Solve for x
    x = 8,013,400,619.96/102,169.02
  6. Step 6: Final answer
    x = 78,432.78

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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.