Home / 102,949.51-142,063.74-57,619.87

Finding the Fourth Proportional to 102,949.51, 142,063.74 and 57,619.87

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Solution

The fourth proportional to 102,949.51, 142,063.74 and 57,619.87 is: 79,511.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,949.51 : 142,063.74 = 57,619.87 : x
  2. Step 2: Convert to fraction form
    102,949.51/142,063.74 = 57,619.87/x
  3. Step 3: Cross multiply
    102,949.51x = 142,063.74 × 57,619.87
  4. Step 4: Simplify right side
    102,949.51x = 8,185,694,230.51
  5. Step 5: Solve for x
    x = 8,185,694,230.51/102,949.51
  6. Step 6: Final answer
    x = 79,511.74

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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.