Home / 127,939,660.80-191,909,491.20-84,857,510.40

Finding the Fourth Proportional to 127,939,660.80, 191,909,491.20 and 84,857,510.40

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Solution

The fourth proportional to 127,939,660.80, 191,909,491.20 and 84,857,510.40 is: 127,286,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,939,660.80 : 191,909,491.20 = 84,857,510.40 : x
  2. Step 2: Convert to fraction form
    127,939,660.80/191,909,491.20 = 84,857,510.40/x
  3. Step 3: Cross multiply
    127,939,660.80x = 191,909,491.20 × 84,857,510.40
  4. Step 4: Simplify right side
    127,939,660.80x = 16,284,961,645,362,708
  5. Step 5: Solve for x
    x = 16,284,961,645,362,708/127,939,660.80
  6. Step 6: Final answer
    x = 127,286,265.60

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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.