Home / 209,181.81-288,670.94-113,688.51

Finding the Fourth Proportional to 209,181.81, 288,670.94 and 113,688.51

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Solution

The fourth proportional to 209,181.81, 288,670.94 and 113,688.51 is: 156,890.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,181.81 : 288,670.94 = 113,688.51 : x
  2. Step 2: Convert to fraction form
    209,181.81/288,670.94 = 113,688.51/x
  3. Step 3: Cross multiply
    209,181.81x = 288,670.94 × 113,688.51
  4. Step 4: Simplify right side
    209,181.81x = 32,818,569,448.05
  5. Step 5: Solve for x
    x = 32,818,569,448.05/209,181.81
  6. Step 6: Final answer
    x = 156,890.17

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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.