Home / 128,947,939.20-193,421,908.80-117,043,660.80

Finding the Fourth Proportional to 128,947,939.20, 193,421,908.80 and 117,043,660.80

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Solution

The fourth proportional to 128,947,939.20, 193,421,908.80 and 117,043,660.80 is: 175,565,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,947,939.20 : 193,421,908.80 = 117,043,660.80 : x
  2. Step 2: Convert to fraction form
    128,947,939.20/193,421,908.80 = 117,043,660.80/x
  3. Step 3: Cross multiply
    128,947,939.20x = 193,421,908.80 × 117,043,660.80
  4. Step 4: Simplify right side
    128,947,939.20x = 22,638,808,284,875,736
  5. Step 5: Solve for x
    x = 22,638,808,284,875,736/128,947,939.20
  6. Step 6: Final answer
    x = 175,565,491.20

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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.