Home / 142,026.36-195,995.94-78,363.60

Finding the Fourth Proportional to 142,026.36, 195,995.94 and 78,363.60

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Solution

The fourth proportional to 142,026.36, 195,995.94 and 78,363.60 is: 108,141.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,026.36 : 195,995.94 = 78,363.60 : x
  2. Step 2: Convert to fraction form
    142,026.36/195,995.94 = 78,363.60/x
  3. Step 3: Cross multiply
    142,026.36x = 195,995.94 × 78,363.60
  4. Step 4: Simplify right side
    142,026.36x = 15,358,947,443.78
  5. Step 5: Solve for x
    x = 15,358,947,443.78/142,026.36
  6. Step 6: Final answer
    x = 108,141.53

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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.