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Finding the Fourth Proportional to 121,930.32, 182,917.32 and 43,090.32

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Solution

The fourth proportional to 121,930.32, 182,917.32 and 43,090.32 is: 64,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,930.32 : 182,917.32 = 43,090.32 : x
  2. Step 2: Convert to fraction form
    121,930.32/182,917.32 = 43,090.32/x
  3. Step 3: Cross multiply
    121,930.32x = 182,917.32 × 43,090.32
  4. Step 4: Simplify right side
    121,930.32x = 7,881,965,852.34
  5. Step 5: Solve for x
    x = 7,881,965,852.34/121,930.32
  6. Step 6: Final answer
    x = 64,643.20

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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.