Home / 212,419.20-293,138.40-122,995.20

Finding the Fourth Proportional to 212,419.20, 293,138.40 and 122,995.20

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Solution

The fourth proportional to 212,419.20, 293,138.40 and 122,995.20 is: 169,733.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,419.20 : 293,138.40 = 122,995.20 : x
  2. Step 2: Convert to fraction form
    212,419.20/293,138.40 = 122,995.20/x
  3. Step 3: Cross multiply
    212,419.20x = 293,138.40 × 122,995.20
  4. Step 4: Simplify right side
    212,419.20x = 36,054,616,135.68
  5. Step 5: Solve for x
    x = 36,054,616,135.68/212,419.20
  6. Step 6: Final answer
    x = 169,733.32

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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.