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Finding the Fourth Proportional to 123,083.55, 169,790.18 and 84,777.20

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Solution

The fourth proportional to 123,083.55, 169,790.18 and 84,777.20 is: 116,947.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,083.55 : 169,790.18 = 84,777.20 : x
  2. Step 2: Convert to fraction form
    123,083.55/169,790.18 = 84,777.20/x
  3. Step 3: Cross multiply
    123,083.55x = 169,790.18 × 84,777.20
  4. Step 4: Simplify right side
    123,083.55x = 14,394,335,411.77
  5. Step 5: Solve for x
    x = 14,394,335,411.77/123,083.55
  6. Step 6: Final answer
    x = 116,947.68

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1.5x scale

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.