Home / 212,222.74-292,909-121,639.44

Finding the Fourth Proportional to 212,222.74, 292,909 and 121,639.44

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Solution

The fourth proportional to 212,222.74, 292,909 and 121,639.44 is: 167,886.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,222.74 : 292,909 = 121,639.44 : x
  2. Step 2: Convert to fraction form
    212,222.74/292,909 = 121,639.44/x
  3. Step 3: Cross multiply
    212,222.74x = 292,909 × 121,639.44
  4. Step 4: Simplify right side
    212,222.74x = 35,629,286,730.96
  5. Step 5: Solve for x
    x = 35,629,286,730.96/212,222.74
  6. Step 6: Final answer
    x = 167,886.28

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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.