Home / 139,947.37-193,120.08-79,509.63

Finding the Fourth Proportional to 139,947.37, 193,120.08 and 79,509.63

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Solution

The fourth proportional to 139,947.37, 193,120.08 and 79,509.63 is: 109,719.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,947.37 : 193,120.08 = 79,509.63 : x
  2. Step 2: Convert to fraction form
    139,947.37/193,120.08 = 79,509.63/x
  3. Step 3: Cross multiply
    139,947.37x = 193,120.08 × 79,509.63
  4. Step 4: Simplify right side
    139,947.37x = 15,354,905,339.54
  5. Step 5: Solve for x
    x = 15,354,905,339.54/139,947.37
  6. Step 6: Final answer
    x = 109,719.14

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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.