Home / 102,979.19-142,104.41-57,649.52

Finding the Fourth Proportional to 102,979.19, 142,104.41 and 57,649.52

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Solution

The fourth proportional to 102,979.19, 142,104.41 and 57,649.52 is: 79,552.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,979.19 : 142,104.41 = 57,649.52 : x
  2. Step 2: Convert to fraction form
    102,979.19/142,104.41 = 57,649.52/x
  3. Step 3: Cross multiply
    102,979.19x = 142,104.41 × 57,649.52
  4. Step 4: Simplify right side
    102,979.19x = 8,192,250,738.14
  5. Step 5: Solve for x
    x = 8,192,250,738.14/102,979.19
  6. Step 6: Final answer
    x = 79,552.49

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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.