Home / 135,938.20-203,980.20-57,060.40

Finding the Fourth Proportional to 135,938.20, 203,980.20 and 57,060.40

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Solution

The fourth proportional to 135,938.20, 203,980.20 and 57,060.40 is: 85,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,938.20 : 203,980.20 = 57,060.40 : x
  2. Step 2: Convert to fraction form
    135,938.20/203,980.20 = 57,060.40/x
  3. Step 3: Cross multiply
    135,938.20x = 203,980.20 × 57,060.40
  4. Step 4: Simplify right side
    135,938.20x = 11,639,191,804.08
  5. Step 5: Solve for x
    x = 11,639,191,804.08/135,938.20
  6. Step 6: Final answer
    x = 85,621.20

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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.