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Finding the Fourth Proportional to 179,485.68, 269,232.84 and 85,888.56

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Solution

The fourth proportional to 179,485.68, 269,232.84 and 85,888.56 is: 128,834.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,485.68 : 269,232.84 = 85,888.56 : x
  2. Step 2: Convert to fraction form
    179,485.68/269,232.84 = 85,888.56/x
  3. Step 3: Cross multiply
    179,485.68x = 269,232.84 × 85,888.56
  4. Step 4: Simplify right side
    179,485.68x = 23,124,020,932.31
  5. Step 5: Solve for x
    x = 23,124,020,932.31/179,485.68
  6. Step 6: Final answer
    x = 128,834.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.