Home / 208,929.51-313,431.12-66,787.47

Finding the Fourth Proportional to 208,929.51, 313,431.12 and 66,787.47

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Solution

The fourth proportional to 208,929.51, 313,431.12 and 66,787.47 is: 100,192.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,929.51 : 313,431.12 = 66,787.47 : x
  2. Step 2: Convert to fraction form
    208,929.51/313,431.12 = 66,787.47/x
  3. Step 3: Cross multiply
    208,929.51x = 313,431.12 × 66,787.47
  4. Step 4: Simplify right side
    208,929.51x = 20,933,271,524.07
  5. Step 5: Solve for x
    x = 20,933,271,524.07/208,929.51
  6. Step 6: Final answer
    x = 100,192.99

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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.