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Finding the Fourth Proportional to 139,993.52, 210,143.36 and 73,415.77

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Solution

The fourth proportional to 139,993.52, 210,143.36 and 73,415.77 is: 110,203.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,993.52 : 210,143.36 = 73,415.77 : x
  2. Step 2: Convert to fraction form
    139,993.52/210,143.36 = 73,415.77/x
  3. Step 3: Cross multiply
    139,993.52x = 210,143.36 × 73,415.77
  4. Step 4: Simplify right side
    139,993.52x = 15,427,836,242.97
  5. Step 5: Solve for x
    x = 15,427,836,242.97/139,993.52
  6. Step 6: Final answer
    x = 110,203.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.