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Finding the Fourth Proportional to 212,167.13, 292,928.87 and 131,712.87

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Solution

The fourth proportional to 212,167.13, 292,928.87 and 131,712.87 is: 181,849.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,167.13 : 292,928.87 = 131,712.87 : x
  2. Step 2: Convert to fraction form
    212,167.13/292,928.87 = 131,712.87/x
  3. Step 3: Cross multiply
    212,167.13x = 292,928.87 × 131,712.87
  4. Step 4: Simplify right side
    212,167.13x = 38,582,501,514.99
  5. Step 5: Solve for x
    x = 38,582,501,514.99/212,167.13
  6. Step 6: Final answer
    x = 181,849.57

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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.