Home / 139,953.68-193,129.09-79,516.34

Finding the Fourth Proportional to 139,953.68, 193,129.09 and 79,516.34

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Solution

The fourth proportional to 139,953.68, 193,129.09 and 79,516.34 is: 109,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,953.68 : 193,129.09 = 79,516.34 : x
  2. Step 2: Convert to fraction form
    139,953.68/193,129.09 = 79,516.34/x
  3. Step 3: Cross multiply
    139,953.68x = 193,129.09 × 79,516.34
  4. Step 4: Simplify right side
    139,953.68x = 15,356,918,384.33
  5. Step 5: Solve for x
    x = 15,356,918,384.33/139,953.68
  6. Step 6: Final answer
    x = 109,728.58

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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.