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Finding the Fourth Proportional to 68,231.40, 102,152.70 and 60,455.40

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Solution

The fourth proportional to 68,231.40, 102,152.70 and 60,455.40 is: 90,510.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,231.40 : 102,152.70 = 60,455.40 : x
  2. Step 2: Convert to fraction form
    68,231.40/102,152.70 = 60,455.40/x
  3. Step 3: Cross multiply
    68,231.40x = 102,152.70 × 60,455.40
  4. Step 4: Simplify right side
    68,231.40x = 6,175,682,339.58
  5. Step 5: Solve for x
    x = 6,175,682,339.58/68,231.40
  6. Step 6: Final answer
    x = 90,510.85

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1.5x scale

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.