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Finding the Fourth Proportional to 139,525.20, 209,352.60 and 73,040.40

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Solution

The fourth proportional to 139,525.20, 209,352.60 and 73,040.40 is: 109,594.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,525.20 : 209,352.60 = 73,040.40 : x
  2. Step 2: Convert to fraction form
    139,525.20/209,352.60 = 73,040.40/x
  3. Step 3: Cross multiply
    139,525.20x = 209,352.60 × 73,040.40
  4. Step 4: Simplify right side
    139,525.20x = 15,291,197,645.04
  5. Step 5: Solve for x
    x = 15,291,197,645.04/139,525.20
  6. Step 6: Final answer
    x = 109,594.52

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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.