Home / 212,247.72-292,943.52-121,664.40

Finding the Fourth Proportional to 212,247.72, 292,943.52 and 121,664.40

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Solution

The fourth proportional to 212,247.72, 292,943.52 and 121,664.40 is: 167,920.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,247.72 : 292,943.52 = 121,664.40 : x
  2. Step 2: Convert to fraction form
    212,247.72/292,943.52 = 121,664.40/x
  3. Step 3: Cross multiply
    212,247.72x = 292,943.52 × 121,664.40
  4. Step 4: Simplify right side
    212,247.72x = 35,640,797,594.69
  5. Step 5: Solve for x
    x = 35,640,797,594.69/212,247.72
  6. Step 6: Final answer
    x = 167,920.76

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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.