Home / 212,929.12-319,393.66-55,157.57

Finding the Fourth Proportional to 212,929.12, 319,393.66 and 55,157.57

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Solution

The fourth proportional to 212,929.12, 319,393.66 and 55,157.57 is: 82,736.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,929.12 : 319,393.66 = 55,157.57 : x
  2. Step 2: Convert to fraction form
    212,929.12/319,393.66 = 55,157.57/x
  3. Step 3: Cross multiply
    212,929.12x = 319,393.66 × 55,157.57
  4. Step 4: Simplify right side
    212,929.12x = 17,616,976,562.04
  5. Step 5: Solve for x
    x = 17,616,976,562.04/212,929.12
  6. Step 6: Final answer
    x = 82,736.34

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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.