Home / 209,131.95-288,603.92-113,638.65

Finding the Fourth Proportional to 209,131.95, 288,603.92 and 113,638.65

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Solution

The fourth proportional to 209,131.95, 288,603.92 and 113,638.65 is: 156,822.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,131.95 : 288,603.92 = 113,638.65 : x
  2. Step 2: Convert to fraction form
    209,131.95/288,603.92 = 113,638.65/x
  3. Step 3: Cross multiply
    209,131.95x = 288,603.92 × 113,638.65
  4. Step 4: Simplify right side
    209,131.95x = 32,796,559,285.31
  5. Step 5: Solve for x
    x = 32,796,559,285.31/209,131.95
  6. Step 6: Final answer
    x = 156,822.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.