Home / 207,721.64-311,582.43-118,912.56

Finding the Fourth Proportional to 207,721.64, 311,582.43 and 118,912.56

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Solution

The fourth proportional to 207,721.64, 311,582.43 and 118,912.56 is: 178,368.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,721.64 : 311,582.43 = 118,912.56 : x
  2. Step 2: Convert to fraction form
    207,721.64/311,582.43 = 118,912.56/x
  3. Step 3: Cross multiply
    207,721.64x = 311,582.43 × 118,912.56
  4. Step 4: Simplify right side
    207,721.64x = 37,051,064,402.32
  5. Step 5: Solve for x
    x = 37,051,064,402.32/207,721.64
  6. Step 6: Final answer
    x = 178,368.83

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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.