Home / 209,456.12-289,055.54-113,968.96

Finding the Fourth Proportional to 209,456.12, 289,055.54 and 113,968.96

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Solution

The fourth proportional to 209,456.12, 289,055.54 and 113,968.96 is: 157,280.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,456.12 : 289,055.54 = 113,968.96 : x
  2. Step 2: Convert to fraction form
    209,456.12/289,055.54 = 113,968.96/x
  3. Step 3: Cross multiply
    209,456.12x = 289,055.54 × 113,968.96
  4. Step 4: Simplify right side
    209,456.12x = 32,943,357,260.92
  5. Step 5: Solve for x
    x = 32,943,357,260.92/209,456.12
  6. Step 6: Final answer
    x = 157,280.47

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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.