Home / 142,237.06-196,289.70-78,571.06

Finding the Fourth Proportional to 142,237.06, 196,289.70 and 78,571.06

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Solution

The fourth proportional to 142,237.06, 196,289.70 and 78,571.06 is: 108,429.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,237.06 : 196,289.70 = 78,571.06 : x
  2. Step 2: Convert to fraction form
    142,237.06/196,289.70 = 78,571.06/x
  3. Step 3: Cross multiply
    142,237.06x = 196,289.70 × 78,571.06
  4. Step 4: Simplify right side
    142,237.06x = 15,422,689,796.08
  5. Step 5: Solve for x
    x = 15,422,689,796.08/142,237.06
  6. Step 6: Final answer
    x = 108,429.48

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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.