Home / 142,776.06-197,028.60-78,244.80

Finding the Fourth Proportional to 142,776.06, 197,028.60 and 78,244.80

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Solution

The fourth proportional to 142,776.06, 197,028.60 and 78,244.80 is: 107,976.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,776.06 : 197,028.60 = 78,244.80 : x
  2. Step 2: Convert to fraction form
    142,776.06/197,028.60 = 78,244.80/x
  3. Step 3: Cross multiply
    142,776.06x = 197,028.60 × 78,244.80
  4. Step 4: Simplify right side
    142,776.06x = 15,416,463,401.28
  5. Step 5: Solve for x
    x = 15,416,463,401.28/142,776.06
  6. Step 6: Final answer
    x = 107,976.53

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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.