Home / 139,161.14-192,142.23-85,518.08

Finding the Fourth Proportional to 139,161.14, 192,142.23 and 85,518.08

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Solution

The fourth proportional to 139,161.14, 192,142.23 and 85,518.08 is: 118,076.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,161.14 : 192,142.23 = 85,518.08 : x
  2. Step 2: Convert to fraction form
    139,161.14/192,142.23 = 85,518.08/x
  3. Step 3: Cross multiply
    139,161.14x = 192,142.23 × 85,518.08
  4. Step 4: Simplify right side
    139,161.14x = 16,431,634,596.52
  5. Step 5: Solve for x
    x = 16,431,634,596.52/139,161.14
  6. Step 6: Final answer
    x = 118,076.31

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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.