Home / 212,517.72-293,263.12-121,869.28

Finding the Fourth Proportional to 212,517.72, 293,263.12 and 121,869.28

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Solution

The fourth proportional to 212,517.72, 293,263.12 and 121,869.28 is: 168,173.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,517.72 : 293,263.12 = 121,869.28 : x
  2. Step 2: Convert to fraction form
    212,517.72/293,263.12 = 121,869.28/x
  3. Step 3: Cross multiply
    212,517.72x = 293,263.12 × 121,869.28
  4. Step 4: Simplify right side
    212,517.72x = 35,739,765,284.95
  5. Step 5: Solve for x
    x = 35,739,765,284.95/212,517.72
  6. Step 6: Final answer
    x = 168,173.11

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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.