Home / 104,121.45-143,677.40-61,671.78

Finding the Fourth Proportional to 104,121.45, 143,677.40 and 61,671.78

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Solution

The fourth proportional to 104,121.45, 143,677.40 and 61,671.78 is: 85,101.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,121.45 : 143,677.40 = 61,671.78 : x
  2. Step 2: Convert to fraction form
    104,121.45/143,677.40 = 61,671.78/x
  3. Step 3: Cross multiply
    104,121.45x = 143,677.40 × 61,671.78
  4. Step 4: Simplify right side
    104,121.45x = 8,860,840,695.41
  5. Step 5: Solve for x
    x = 8,860,840,695.41/104,121.45
  6. Step 6: Final answer
    x = 85,101.01

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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.