Home / 103,989.02-143,504.88-58,676.61

Finding the Fourth Proportional to 103,989.02, 143,504.88 and 58,676.61

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Solution

The fourth proportional to 103,989.02, 143,504.88 and 58,676.61 is: 80,973.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,989.02 : 143,504.88 = 58,676.61 : x
  2. Step 2: Convert to fraction form
    103,989.02/143,504.88 = 58,676.61/x
  3. Step 3: Cross multiply
    103,989.02x = 143,504.88 × 58,676.61
  4. Step 4: Simplify right side
    103,989.02x = 8,420,379,876.86
  5. Step 5: Solve for x
    x = 8,420,379,876.86/103,989.02
  6. Step 6: Final answer
    x = 80,973.74

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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.