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Finding the Fourth Proportional to 135,969.60, 203,954.40 and 120,806.40

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Solution

The fourth proportional to 135,969.60, 203,954.40 and 120,806.40 is: 181,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,969.60 : 203,954.40 = 120,806.40 : x
  2. Step 2: Convert to fraction form
    135,969.60/203,954.40 = 120,806.40/x
  3. Step 3: Cross multiply
    135,969.60x = 203,954.40 × 120,806.40
  4. Step 4: Simplify right side
    135,969.60x = 24,638,996,828.16
  5. Step 5: Solve for x
    x = 24,638,996,828.16/135,969.60
  6. Step 6: Final answer
    x = 181,209.60

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1.5x scale

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.