Home / 212,355.64-293,078.82-137,122.84

Finding the Fourth Proportional to 212,355.64, 293,078.82 and 137,122.84

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Solution

The fourth proportional to 212,355.64, 293,078.82 and 137,122.84 is: 189,247.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,355.64 : 293,078.82 = 137,122.84 : x
  2. Step 2: Convert to fraction form
    212,355.64/293,078.82 = 137,122.84/x
  3. Step 3: Cross multiply
    212,355.64x = 293,078.82 × 137,122.84
  4. Step 4: Simplify right side
    212,355.64x = 40,187,800,142.25
  5. Step 5: Solve for x
    x = 40,187,800,142.25/212,355.64
  6. Step 6: Final answer
    x = 189,247.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.