Home / 203,982.60-306,038.70-91,619.40

Finding the Fourth Proportional to 203,982.60, 306,038.70 and 91,619.40

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Solution

The fourth proportional to 203,982.60, 306,038.70 and 91,619.40 is: 137,458.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,982.60 : 306,038.70 = 91,619.40 : x
  2. Step 2: Convert to fraction form
    203,982.60/306,038.70 = 91,619.40/x
  3. Step 3: Cross multiply
    203,982.60x = 306,038.70 × 91,619.40
  4. Step 4: Simplify right side
    203,982.60x = 28,039,082,070.78
  5. Step 5: Solve for x
    x = 28,039,082,070.78/203,982.60
  6. Step 6: Final answer
    x = 137,458.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.