Home / 209,319.20-313,977.36-69,089.12

Finding the Fourth Proportional to 209,319.20, 313,977.36 and 69,089.12

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Solution

The fourth proportional to 209,319.20, 313,977.36 and 69,089.12 is: 103,633.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,319.20 : 313,977.36 = 69,089.12 : x
  2. Step 2: Convert to fraction form
    209,319.20/313,977.36 = 69,089.12/x
  3. Step 3: Cross multiply
    209,319.20x = 313,977.36 × 69,089.12
  4. Step 4: Simplify right side
    209,319.20x = 21,692,419,502.32
  5. Step 5: Solve for x
    x = 21,692,419,502.32/209,319.20
  6. Step 6: Final answer
    x = 103,633.20

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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.