Home / 139,739,189.75-192,840,871.80-81,036,708.96

Finding the Fourth Proportional to 139,739,189.75, 192,840,871.80 and 81,036,708.96

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Solution

The fourth proportional to 139,739,189.75, 192,840,871.80 and 81,036,708.96 is: 111,831,116.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739,189.75 : 192,840,871.80 = 81,036,708.96 : x
  2. Step 2: Convert to fraction form
    139,739,189.75/192,840,871.80 = 81,036,708.96/x
  3. Step 3: Cross multiply
    139,739,189.75x = 192,840,871.80 × 81,036,708.96
  4. Step 4: Simplify right side
    139,739,189.75x = 15,627,189,603,649,272
  5. Step 5: Solve for x
    x = 15,627,189,603,649,272/139,739,189.75
  6. Step 6: Final answer
    x = 111,831,116.47

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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.