Home / 68,130.20-102,199.62-21,384.92

Finding the Fourth Proportional to 68,130.20, 102,199.62 and 21,384.92

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Solution

The fourth proportional to 68,130.20, 102,199.62 and 21,384.92 is: 32,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,130.20 : 102,199.62 = 21,384.92 : x
  2. Step 2: Convert to fraction form
    68,130.20/102,199.62 = 21,384.92/x
  3. Step 3: Cross multiply
    68,130.20x = 102,199.62 × 21,384.92
  4. Step 4: Simplify right side
    68,130.20x = 2,185,531,033.42
  5. Step 5: Solve for x
    x = 2,185,531,033.42/68,130.20
  6. Step 6: Final answer
    x = 32,078.74

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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.