Home / 68,145.16-102,234.21-21,398.02

Finding the Fourth Proportional to 68,145.16, 102,234.21 and 21,398.02

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Solution

The fourth proportional to 68,145.16, 102,234.21 and 21,398.02 is: 32,102.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,145.16 : 102,234.21 = 21,398.02 : x
  2. Step 2: Convert to fraction form
    68,145.16/102,234.21 = 21,398.02/x
  3. Step 3: Cross multiply
    68,145.16x = 102,234.21 × 21,398.02
  4. Step 4: Simplify right side
    68,145.16x = 2,187,609,670.26
  5. Step 5: Solve for x
    x = 2,187,609,670.26/68,145.16
  6. Step 6: Final answer
    x = 32,102.20

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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.