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Finding the Fourth Proportional to 103,664.77, 143,101.53 and 69,692.97

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Solution

The fourth proportional to 103,664.77, 143,101.53 and 69,692.97 is: 96,205.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,664.77 : 143,101.53 = 69,692.97 : x
  2. Step 2: Convert to fraction form
    103,664.77/143,101.53 = 69,692.97/x
  3. Step 3: Cross multiply
    103,664.77x = 143,101.53 × 69,692.97
  4. Step 4: Simplify right side
    103,664.77x = 9,973,170,637.24
  5. Step 5: Solve for x
    x = 9,973,170,637.24/103,664.77
  6. Step 6: Final answer
    x = 96,205.98

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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.