Home / 142,659.87-196,862.74-78,993.56

Finding the Fourth Proportional to 142,659.87, 196,862.74 and 78,993.56

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Solution

The fourth proportional to 142,659.87, 196,862.74 and 78,993.56 is: 109,006.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,659.87 : 196,862.74 = 78,993.56 : x
  2. Step 2: Convert to fraction form
    142,659.87/196,862.74 = 78,993.56/x
  3. Step 3: Cross multiply
    142,659.87x = 196,862.74 × 78,993.56
  4. Step 4: Simplify right side
    142,659.87x = 15,550,888,958.63
  5. Step 5: Solve for x
    x = 15,550,888,958.63/142,659.87
  6. Step 6: Final answer
    x = 109,006.75

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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.