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Finding the Fourth Proportional to 189,075.54, 260,912.40 and 108,509.70

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Solution

The fourth proportional to 189,075.54, 260,912.40 and 108,509.70 is: 149,736.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,075.54 : 260,912.40 = 108,509.70 : x
  2. Step 2: Convert to fraction form
    189,075.54/260,912.40 = 108,509.70/x
  3. Step 3: Cross multiply
    189,075.54x = 260,912.40 × 108,509.70
  4. Step 4: Simplify right side
    189,075.54x = 28,311,526,250.28
  5. Step 5: Solve for x
    x = 28,311,526,250.28/189,075.54
  6. Step 6: Final answer
    x = 149,736.59

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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.