Home / 209,867.16-289,388-141,765.92

Finding the Fourth Proportional to 209,867.16, 289,388 and 141,765.92

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Solution

The fourth proportional to 209,867.16, 289,388 and 141,765.92 is: 195,482.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,867.16 : 289,388 = 141,765.92 : x
  2. Step 2: Convert to fraction form
    209,867.16/289,388 = 141,765.92/x
  3. Step 3: Cross multiply
    209,867.16x = 289,388 × 141,765.92
  4. Step 4: Simplify right side
    209,867.16x = 41,025,356,056.96
  5. Step 5: Solve for x
    x = 41,025,356,056.96/209,867.16
  6. Step 6: Final answer
    x = 195,482.50

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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.