Home / 155,052,493.56-213,977,005.35-85,442,358.48

Finding the Fourth Proportional to 155,052,493.56, 213,977,005.35 and 85,442,358.48

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Solution

The fourth proportional to 155,052,493.56, 213,977,005.35 and 85,442,358.48 is: 117,912,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,052,493.56 : 213,977,005.35 = 85,442,358.48 : x
  2. Step 2: Convert to fraction form
    155,052,493.56/213,977,005.35 = 85,442,358.48/x
  3. Step 3: Cross multiply
    155,052,493.56x = 213,977,005.35 × 85,442,358.48
  4. Step 4: Simplify right side
    155,052,493.56x = 18,282,699,997,591,580
  5. Step 5: Solve for x
    x = 18,282,699,997,591,580/155,052,493.56
  6. Step 6: Final answer
    x = 117,912,969.85

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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.