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Finding the Fourth Proportional to 212,181.86, 292,813.86 and 121,537.76

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Solution

The fourth proportional to 212,181.86, 292,813.86 and 121,537.76 is: 167,723.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,181.86 : 292,813.86 = 121,537.76 : x
  2. Step 2: Convert to fraction form
    212,181.86/292,813.86 = 121,537.76/x
  3. Step 3: Cross multiply
    212,181.86x = 292,813.86 × 121,537.76
  4. Step 4: Simplify right side
    212,181.86x = 35,587,941,373.39
  5. Step 5: Solve for x
    x = 35,587,941,373.39/212,181.86
  6. Step 6: Final answer
    x = 167,723.77

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1.5x scale

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.