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Finding the Fourth Proportional to 135,498.83, 203,373.18 and 68,986.89

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Solution

The fourth proportional to 135,498.83, 203,373.18 and 68,986.89 is: 103,543.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,498.83 : 203,373.18 = 68,986.89 : x
  2. Step 2: Convert to fraction form
    135,498.83/203,373.18 = 68,986.89/x
  3. Step 3: Cross multiply
    135,498.83x = 203,373.18 × 68,986.89
  4. Step 4: Simplify right side
    135,498.83x = 14,030,083,197.61
  5. Step 5: Solve for x
    x = 14,030,083,197.61/135,498.83
  6. Step 6: Final answer
    x = 103,543.95

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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.