Home / 142,991,768.07-197,322,829.52-81,110,778.03

Finding the Fourth Proportional to 142,991,768.07, 197,322,829.52 and 81,110,778.03

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Solution

The fourth proportional to 142,991,768.07, 197,322,829.52 and 81,110,778.03 is: 111,929,577.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,991,768.07 : 197,322,829.52 = 81,110,778.03 : x
  2. Step 2: Convert to fraction form
    142,991,768.07/197,322,829.52 = 81,110,778.03/x
  3. Step 3: Cross multiply
    142,991,768.07x = 197,322,829.52 × 81,110,778.03
  4. Step 4: Simplify right side
    142,991,768.07x = 16,005,008,225,042,696
  5. Step 5: Solve for x
    x = 16,005,008,225,042,696/142,991,768.07
  6. Step 6: Final answer
    x = 111,929,577.77

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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.