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Finding the Fourth Proportional to 112,576, 155,357.44 and 72,901.12

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Solution

The fourth proportional to 112,576, 155,357.44 and 72,901.12 is: 100,605.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,576 : 155,357.44 = 72,901.12 : x
  2. Step 2: Convert to fraction form
    112,576/155,357.44 = 72,901.12/x
  3. Step 3: Cross multiply
    112,576x = 155,357.44 × 72,901.12
  4. Step 4: Simplify right side
    112,576x = 11,325,731,376.33
  5. Step 5: Solve for x
    x = 11,325,731,376.33/112,576
  6. Step 6: Final answer
    x = 100,605.20

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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.