Home / 209,965.90-314,856.50-76,811.62

Finding the Fourth Proportional to 209,965.90, 314,856.50 and 76,811.62

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Solution

The fourth proportional to 209,965.90, 314,856.50 and 76,811.62 is: 115,183.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,965.90 : 314,856.50 = 76,811.62 : x
  2. Step 2: Convert to fraction form
    209,965.90/314,856.50 = 76,811.62/x
  3. Step 3: Cross multiply
    209,965.90x = 314,856.50 × 76,811.62
  4. Step 4: Simplify right side
    209,965.90x = 24,184,637,832.53
  5. Step 5: Solve for x
    x = 24,184,637,832.53/209,965.90
  6. Step 6: Final answer
    x = 115,183.65

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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.