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Finding the Fourth Proportional to 112,559.34, 155,208.24 and 72,257.88

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Solution

The fourth proportional to 112,559.34, 155,208.24 and 72,257.88 is: 99,636.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,559.34 : 155,208.24 = 72,257.88 : x
  2. Step 2: Convert to fraction form
    112,559.34/155,208.24 = 72,257.88/x
  3. Step 3: Cross multiply
    112,559.34x = 155,208.24 × 72,257.88
  4. Step 4: Simplify right side
    112,559.34x = 11,215,018,380.93
  5. Step 5: Solve for x
    x = 11,215,018,380.93/112,559.34
  6. Step 6: Final answer
    x = 99,636.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.