Home / 345,882.26-518,838.94-105,978.59

Finding the Fourth Proportional to 345,882.26, 518,838.94 and 105,978.59

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Solution

The fourth proportional to 345,882.26, 518,838.94 and 105,978.59 is: 158,972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,882.26 : 518,838.94 = 105,978.59 : x
  2. Step 2: Convert to fraction form
    345,882.26/518,838.94 = 105,978.59/x
  3. Step 3: Cross multiply
    345,882.26x = 518,838.94 × 105,978.59
  4. Step 4: Simplify right side
    345,882.26x = 54,985,819,298.29
  5. Step 5: Solve for x
    x = 54,985,819,298.29/345,882.26
  6. Step 6: Final answer
    x = 158,972.65

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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.