Home / 139,102,912.20-208,654,368.30-87,370,739.40

Finding the Fourth Proportional to 139,102,912.20, 208,654,368.30 and 87,370,739.40

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Solution

The fourth proportional to 139,102,912.20, 208,654,368.30 and 87,370,739.40 is: 131,056,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,102,912.20 : 208,654,368.30 = 87,370,739.40 : x
  2. Step 2: Convert to fraction form
    139,102,912.20/208,654,368.30 = 87,370,739.40/x
  3. Step 3: Cross multiply
    139,102,912.20x = 208,654,368.30 × 87,370,739.40
  4. Step 4: Simplify right side
    139,102,912.20x = 18,230,286,437,410,924
  5. Step 5: Solve for x
    x = 18,230,286,437,410,924/139,102,912.20
  6. Step 6: Final answer
    x = 131,056,109.10

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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.