Home / 128,737,980.20-193,330,919.10-68,271,804.20

Finding the Fourth Proportional to 128,737,980.20, 193,330,919.10 and 68,271,804.20

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Solution

The fourth proportional to 128,737,980.20, 193,330,919.10 and 68,271,804.20 is: 102,526,469.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,737,980.20 : 193,330,919.10 = 68,271,804.20 : x
  2. Step 2: Convert to fraction form
    128,737,980.20/193,330,919.10 = 68,271,804.20/x
  3. Step 3: Cross multiply
    128,737,980.20x = 193,330,919.10 × 68,271,804.20
  4. Step 4: Simplify right side
    128,737,980.20x = 13,199,050,654,601,240
  5. Step 5: Solve for x
    x = 13,199,050,654,601,240/128,737,980.20
  6. Step 6: Final answer
    x = 102,526,469.92

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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.