Home / 212,134.40-292,753.92-121,505.28

Finding the Fourth Proportional to 212,134.40, 292,753.92 and 121,505.28

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Solution

The fourth proportional to 212,134.40, 292,753.92 and 121,505.28 is: 167,682.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,134.40 : 292,753.92 = 121,505.28 : x
  2. Step 2: Convert to fraction form
    212,134.40/292,753.92 = 121,505.28/x
  3. Step 3: Cross multiply
    212,134.40x = 292,753.92 × 121,505.28
  4. Step 4: Simplify right side
    212,134.40x = 35,571,147,020.70
  5. Step 5: Solve for x
    x = 35,571,147,020.70/212,134.40
  6. Step 6: Final answer
    x = 167,682.13

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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.