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Finding the Fourth Proportional to 98,236.60, 147,133.35 and 68,785.91

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Solution

The fourth proportional to 98,236.60, 147,133.35 and 68,785.91 is: 103,023.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,236.60 : 147,133.35 = 68,785.91 : x
  2. Step 2: Convert to fraction form
    98,236.60/147,133.35 = 68,785.91/x
  3. Step 3: Cross multiply
    98,236.60x = 147,133.35 × 68,785.91
  4. Step 4: Simplify right side
    98,236.60x = 10,120,700,291.50
  5. Step 5: Solve for x
    x = 10,120,700,291.50/98,236.60
  6. Step 6: Final answer
    x = 103,023.73

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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.