Home / 212,515.72-293,260.36-121,867.28

Finding the Fourth Proportional to 212,515.72, 293,260.36 and 121,867.28

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Solution

The fourth proportional to 212,515.72, 293,260.36 and 121,867.28 is: 168,170.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,515.72 : 293,260.36 = 121,867.28 : x
  2. Step 2: Convert to fraction form
    212,515.72/293,260.36 = 121,867.28/x
  3. Step 3: Cross multiply
    212,515.72x = 293,260.36 × 121,867.28
  4. Step 4: Simplify right side
    212,515.72x = 35,738,842,405.02
  5. Step 5: Solve for x
    x = 35,738,842,405.02/212,515.72
  6. Step 6: Final answer
    x = 168,170.35

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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.