Home / 128,947,975.70-193,421,963.55-117,043,697.30

Finding the Fourth Proportional to 128,947,975.70, 193,421,963.55 and 117,043,697.30

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Solution

The fourth proportional to 128,947,975.70, 193,421,963.55 and 117,043,697.30 is: 175,565,545.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,947,975.70 : 193,421,963.55 = 117,043,697.30 : x
  2. Step 2: Convert to fraction form
    128,947,975.70/193,421,963.55 = 117,043,697.30/x
  3. Step 3: Cross multiply
    128,947,975.70x = 193,421,963.55 × 117,043,697.30
  4. Step 4: Simplify right side
    128,947,975.70x = 22,638,821,752,917,836
  5. Step 5: Solve for x
    x = 22,638,821,752,917,836/128,947,975.70
  6. Step 6: Final answer
    x = 175,565,545.95

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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.