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Finding the Fourth Proportional to 139,533.60, 209,300.40 and 134,722.20

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Solution

The fourth proportional to 139,533.60, 209,300.40 and 134,722.20 is: 202,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,533.60 : 209,300.40 = 134,722.20 : x
  2. Step 2: Convert to fraction form
    139,533.60/209,300.40 = 134,722.20/x
  3. Step 3: Cross multiply
    139,533.60x = 209,300.40 × 134,722.20
  4. Step 4: Simplify right side
    139,533.60x = 28,197,410,348.88
  5. Step 5: Solve for x
    x = 28,197,410,348.88/139,533.60
  6. Step 6: Final answer
    x = 202,083.30

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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.