Home / 128,740,015.20-193,110,022.80-114,709,972.80

Finding the Fourth Proportional to 128,740,015.20, 193,110,022.80 and 114,709,972.80

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Solution

The fourth proportional to 128,740,015.20, 193,110,022.80 and 114,709,972.80 is: 172,064,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,740,015.20 : 193,110,022.80 = 114,709,972.80 : x
  2. Step 2: Convert to fraction form
    128,740,015.20/193,110,022.80 = 114,709,972.80/x
  3. Step 3: Cross multiply
    128,740,015.20x = 193,110,022.80 × 114,709,972.80
  4. Step 4: Simplify right side
    128,740,015.20x = 22,151,645,462,795,380
  5. Step 5: Solve for x
    x = 22,151,645,462,795,380/128,740,015.20
  6. Step 6: Final answer
    x = 172,064,959.20

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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.