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Finding the Fourth Proportional to 140,496.12, 210,875.40 and 100,867.68

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Solution

The fourth proportional to 140,496.12, 210,875.40 and 100,867.68 is: 151,395.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,496.12 : 210,875.40 = 100,867.68 : x
  2. Step 2: Convert to fraction form
    140,496.12/210,875.40 = 100,867.68/x
  3. Step 3: Cross multiply
    140,496.12x = 210,875.40 × 100,867.68
  4. Step 4: Simplify right side
    140,496.12x = 21,270,512,367.07
  5. Step 5: Solve for x
    x = 21,270,512,367.07/140,496.12
  6. Step 6: Final answer
    x = 151,395.73

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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.