Home / 103,083.69-142,252.05-57,141.40

Finding the Fourth Proportional to 103,083.69, 142,252.05 and 57,141.40

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Solution

The fourth proportional to 103,083.69, 142,252.05 and 57,141.40 is: 78,853.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,083.69 : 142,252.05 = 57,141.40 : x
  2. Step 2: Convert to fraction form
    103,083.69/142,252.05 = 57,141.40/x
  3. Step 3: Cross multiply
    103,083.69x = 142,252.05 × 57,141.40
  4. Step 4: Simplify right side
    103,083.69x = 8,128,481,093.82
  5. Step 5: Solve for x
    x = 8,128,481,093.82/103,083.69
  6. Step 6: Final answer
    x = 78,853.22

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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.