Home / 180,143.32-270,102.64-67,819

Finding the Fourth Proportional to 180,143.32, 270,102.64 and 67,819

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Solution

The fourth proportional to 180,143.32, 270,102.64 and 67,819 is: 101,686.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,143.32 : 270,102.64 = 67,819 : x
  2. Step 2: Convert to fraction form
    180,143.32/270,102.64 = 67,819/x
  3. Step 3: Cross multiply
    180,143.32x = 270,102.64 × 67,819
  4. Step 4: Simplify right side
    180,143.32x = 18,318,090,942.16
  5. Step 5: Solve for x
    x = 18,318,090,942.16/180,143.32
  6. Step 6: Final answer
    x = 101,686.21

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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.