Home / 139,541.10-209,080.80-80,273.40

Finding the Fourth Proportional to 139,541.10, 209,080.80 and 80,273.40

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Solution

The fourth proportional to 139,541.10, 209,080.80 and 80,273.40 is: 120,277.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,541.10 : 209,080.80 = 80,273.40 : x
  2. Step 2: Convert to fraction form
    139,541.10/209,080.80 = 80,273.40/x
  3. Step 3: Cross multiply
    139,541.10x = 209,080.80 × 80,273.40
  4. Step 4: Simplify right side
    139,541.10x = 16,783,626,690.72
  5. Step 5: Solve for x
    x = 16,783,626,690.72/139,541.10
  6. Step 6: Final answer
    x = 120,277.30

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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.