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Finding the Fourth Proportional to 101,411.28, 152,801.53 and 84,028.77

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Solution

The fourth proportional to 101,411.28, 152,801.53 and 84,028.77 is: 126,610.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,411.28 : 152,801.53 = 84,028.77 : x
  2. Step 2: Convert to fraction form
    101,411.28/152,801.53 = 84,028.77/x
  3. Step 3: Cross multiply
    101,411.28x = 152,801.53 × 84,028.77
  4. Step 4: Simplify right side
    101,411.28x = 12,839,724,409.95
  5. Step 5: Solve for x
    x = 12,839,724,409.95/101,411.28
  6. Step 6: Final answer
    x = 126,610.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.