Home / 68,153.16-102,222.52-18,238.30

Finding the Fourth Proportional to 68,153.16, 102,222.52 and 18,238.30

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Solution

The fourth proportional to 68,153.16, 102,222.52 and 18,238.30 is: 27,355.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,153.16 : 102,222.52 = 18,238.30 : x
  2. Step 2: Convert to fraction form
    68,153.16/102,222.52 = 18,238.30/x
  3. Step 3: Cross multiply
    68,153.16x = 102,222.52 × 18,238.30
  4. Step 4: Simplify right side
    68,153.16x = 1,864,364,761.12
  5. Step 5: Solve for x
    x = 1,864,364,761.12/68,153.16
  6. Step 6: Final answer
    x = 27,355.52

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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.