Home / 139,233.05-192,141.80-75,570.87

Finding the Fourth Proportional to 139,233.05, 192,141.80 and 75,570.87

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Solution

The fourth proportional to 139,233.05, 192,141.80 and 75,570.87 is: 104,287.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,233.05 : 192,141.80 = 75,570.87 : x
  2. Step 2: Convert to fraction form
    139,233.05/192,141.80 = 75,570.87/x
  3. Step 3: Cross multiply
    139,233.05x = 192,141.80 × 75,570.87
  4. Step 4: Simplify right side
    139,233.05x = 14,520,322,611.51
  5. Step 5: Solve for x
    x = 14,520,322,611.51/139,233.05
  6. Step 6: Final answer
    x = 104,287.91

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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.