Home / 198,803,721.60-298,028,289.60-77,606,985.60

Finding the Fourth Proportional to 198,803,721.60, 298,028,289.60 and 77,606,985.60

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Solution

The fourth proportional to 198,803,721.60, 298,028,289.60 and 77,606,985.60 is: 116,341,268.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,803,721.60 : 298,028,289.60 = 77,606,985.60 : x
  2. Step 2: Convert to fraction form
    198,803,721.60/298,028,289.60 = 77,606,985.60/x
  3. Step 3: Cross multiply
    198,803,721.60x = 298,028,289.60 × 77,606,985.60
  4. Step 4: Simplify right side
    198,803,721.60x = 23,129,077,179,379,828
  5. Step 5: Solve for x
    x = 23,129,077,179,379,828/198,803,721.60
  6. Step 6: Final answer
    x = 116,341,268.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.