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Finding the Fourth Proportional to 101,762.36, 140,303.01 and 72,725.43

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Solution

The fourth proportional to 101,762.36, 140,303.01 and 72,725.43 is: 100,268.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,762.36 : 140,303.01 = 72,725.43 : x
  2. Step 2: Convert to fraction form
    101,762.36/140,303.01 = 72,725.43/x
  3. Step 3: Cross multiply
    101,762.36x = 140,303.01 × 72,725.43
  4. Step 4: Simplify right side
    101,762.36x = 10,203,596,732.54
  5. Step 5: Solve for x
    x = 10,203,596,732.54/101,762.36
  6. Step 6: Final answer
    x = 100,268.87

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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.