Home / 136,728.15-188,684.88-75,474.37

Finding the Fourth Proportional to 136,728.15, 188,684.88 and 75,474.37

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Solution

The fourth proportional to 136,728.15, 188,684.88 and 75,474.37 is: 104,154.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,728.15 : 188,684.88 = 75,474.37 : x
  2. Step 2: Convert to fraction form
    136,728.15/188,684.88 = 75,474.37/x
  3. Step 3: Cross multiply
    136,728.15x = 188,684.88 × 75,474.37
  4. Step 4: Simplify right side
    136,728.15x = 14,240,872,729.55
  5. Step 5: Solve for x
    x = 14,240,872,729.55/136,728.15
  6. Step 6: Final answer
    x = 104,154.65

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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.