Home / 136,658.86-188,570.37-76,222.42

Finding the Fourth Proportional to 136,658.86, 188,570.37 and 76,222.42

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Solution

The fourth proportional to 136,658.86, 188,570.37 and 76,222.42 is: 105,176.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,658.86 : 188,570.37 = 76,222.42 : x
  2. Step 2: Convert to fraction form
    136,658.86/188,570.37 = 76,222.42/x
  3. Step 3: Cross multiply
    136,658.86x = 188,570.37 × 76,222.42
  4. Step 4: Simplify right side
    136,658.86x = 14,373,289,941.70
  5. Step 5: Solve for x
    x = 14,373,289,941.70/136,658.86
  6. Step 6: Final answer
    x = 105,176.42

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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.