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Finding the Fourth Proportional to 203,515.64, 280,868.78 and 112,900.77

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Solution

The fourth proportional to 203,515.64, 280,868.78 and 112,900.77 is: 155,812.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,515.64 : 280,868.78 = 112,900.77 : x
  2. Step 2: Convert to fraction form
    203,515.64/280,868.78 = 112,900.77/x
  3. Step 3: Cross multiply
    203,515.64x = 280,868.78 × 112,900.77
  4. Step 4: Simplify right side
    203,515.64x = 31,710,301,813.21
  5. Step 5: Solve for x
    x = 31,710,301,813.21/203,515.64
  6. Step 6: Final answer
    x = 155,812.60

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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.