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Finding the Fourth Proportional to 211,663.92, 292,101.72 and 121,034.64

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Solution

The fourth proportional to 211,663.92, 292,101.72 and 121,034.64 is: 167,030.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,663.92 : 292,101.72 = 121,034.64 : x
  2. Step 2: Convert to fraction form
    211,663.92/292,101.72 = 121,034.64/x
  3. Step 3: Cross multiply
    211,663.92x = 292,101.72 × 121,034.64
  4. Step 4: Simplify right side
    211,663.92x = 35,354,426,523.58
  5. Step 5: Solve for x
    x = 35,354,426,523.58/211,663.92
  6. Step 6: Final answer
    x = 167,030.95

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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.