Home / 212,428.28-293,116.68-121,767.56

Finding the Fourth Proportional to 212,428.28, 293,116.68 and 121,767.56

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Solution

The fourth proportional to 212,428.28, 293,116.68 and 121,767.56 is: 168,019.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,428.28 : 293,116.68 = 121,767.56 : x
  2. Step 2: Convert to fraction form
    212,428.28/293,116.68 = 121,767.56/x
  3. Step 3: Cross multiply
    212,428.28x = 293,116.68 × 121,767.56
  4. Step 4: Simplify right side
    212,428.28x = 35,692,102,918.90
  5. Step 5: Solve for x
    x = 35,692,102,918.90/212,428.28
  6. Step 6: Final answer
    x = 168,019.54

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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.