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Finding the Fourth Proportional to 203,075.54, 280,235.12 and 112,425.12

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Solution

The fourth proportional to 203,075.54, 280,235.12 and 112,425.12 is: 155,141.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,075.54 : 280,235.12 = 112,425.12 : x
  2. Step 2: Convert to fraction form
    203,075.54/280,235.12 = 112,425.12/x
  3. Step 3: Cross multiply
    203,075.54x = 280,235.12 × 112,425.12
  4. Step 4: Simplify right side
    203,075.54x = 31,505,466,994.21
  5. Step 5: Solve for x
    x = 31,505,466,994.21/203,075.54
  6. Step 6: Final answer
    x = 155,141.61

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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.