Home / 139,620,798.90-208,921,000.14-82,140,140.34

Finding the Fourth Proportional to 139,620,798.90, 208,921,000.14 and 82,140,140.34

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Solution

The fourth proportional to 139,620,798.90, 208,921,000.14 and 82,140,140.34 is: 122,910,056.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,620,798.90 : 208,921,000.14 = 82,140,140.34 : x
  2. Step 2: Convert to fraction form
    139,620,798.90/208,921,000.14 = 82,140,140.34/x
  3. Step 3: Cross multiply
    139,620,798.90x = 208,921,000.14 × 82,140,140.34
  4. Step 4: Simplify right side
    139,620,798.90x = 17,160,800,271,472,760
  5. Step 5: Solve for x
    x = 17,160,800,271,472,760/139,620,798.90
  6. Step 6: Final answer
    x = 122,910,056.43

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