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Finding the Fourth Proportional to 103,847.95, 143,310.31 and 56,101.31

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Solution

The fourth proportional to 103,847.95, 143,310.31 and 56,101.31 is: 77,419.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,847.95 : 143,310.31 = 56,101.31 : x
  2. Step 2: Convert to fraction form
    103,847.95/143,310.31 = 56,101.31/x
  3. Step 3: Cross multiply
    103,847.95x = 143,310.31 × 56,101.31
  4. Step 4: Simplify right side
    103,847.95x = 8,039,896,123.68
  5. Step 5: Solve for x
    x = 8,039,896,123.68/103,847.95
  6. Step 6: Final answer
    x = 77,419.88

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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.