Home / 209,157.12-288,639.54-113,665.32

Finding the Fourth Proportional to 209,157.12, 288,639.54 and 113,665.32

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Solution

The fourth proportional to 209,157.12, 288,639.54 and 113,665.32 is: 156,859.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,157.12 : 288,639.54 = 113,665.32 : x
  2. Step 2: Convert to fraction form
    209,157.12/288,639.54 = 113,665.32/x
  3. Step 3: Cross multiply
    209,157.12x = 288,639.54 × 113,665.32
  4. Step 4: Simplify right side
    209,157.12x = 32,808,305,678.75
  5. Step 5: Solve for x
    x = 32,808,305,678.75/209,157.12
  6. Step 6: Final answer
    x = 156,859.62

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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.