Home / 142,768,647.12-197,004,742.20-80,875,730.64

Finding the Fourth Proportional to 142,768,647.12, 197,004,742.20 and 80,875,730.64

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Solution

The fourth proportional to 142,768,647.12, 197,004,742.20 and 80,875,730.64 is: 111,599,449.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,768,647.12 : 197,004,742.20 = 80,875,730.64 : x
  2. Step 2: Convert to fraction form
    142,768,647.12/197,004,742.20 = 80,875,730.64/x
  3. Step 3: Cross multiply
    142,768,647.12x = 197,004,742.20 × 80,875,730.64
  4. Step 4: Simplify right side
    142,768,647.12x = 15,932,902,464,969,840
  5. Step 5: Solve for x
    x = 15,932,902,464,969,840/142,768,647.12
  6. Step 6: Final answer
    x = 111,599,449.78

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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.