Home / 143,435.34-197,945.52-78,907.26

Finding the Fourth Proportional to 143,435.34, 197,945.52 and 78,907.26

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Solution

The fourth proportional to 143,435.34, 197,945.52 and 78,907.26 is: 108,894.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,435.34 : 197,945.52 = 78,907.26 : x
  2. Step 2: Convert to fraction form
    143,435.34/197,945.52 = 78,907.26/x
  3. Step 3: Cross multiply
    143,435.34x = 197,945.52 × 78,907.26
  4. Step 4: Simplify right side
    143,435.34x = 15,619,338,612.48
  5. Step 5: Solve for x
    x = 15,619,338,612.48/143,435.34
  6. Step 6: Final answer
    x = 108,894.63

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1.5x scale

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.