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Finding the Fourth Proportional to 135,615.22, 203,303 and 51,316.86

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Solution

The fourth proportional to 135,615.22, 203,303 and 51,316.86 is: 76,929.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,615.22 : 203,303 = 51,316.86 : x
  2. Step 2: Convert to fraction form
    135,615.22/203,303 = 51,316.86/x
  3. Step 3: Cross multiply
    135,615.22x = 203,303 × 51,316.86
  4. Step 4: Simplify right side
    135,615.22x = 10,432,871,588.58
  5. Step 5: Solve for x
    x = 10,432,871,588.58/135,615.22
  6. Step 6: Final answer
    x = 76,929.95

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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.