Home / 128,304,139.20-192,456,208.80-70,908,511.20

Finding the Fourth Proportional to 128,304,139.20, 192,456,208.80 and 70,908,511.20

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Solution

The fourth proportional to 128,304,139.20, 192,456,208.80 and 70,908,511.20 is: 106,362,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,139.20 : 192,456,208.80 = 70,908,511.20 : x
  2. Step 2: Convert to fraction form
    128,304,139.20/192,456,208.80 = 70,908,511.20/x
  3. Step 3: Cross multiply
    128,304,139.20x = 192,456,208.80 × 70,908,511.20
  4. Step 4: Simplify right side
    128,304,139.20x = 13,646,783,237,204,340
  5. Step 5: Solve for x
    x = 13,646,783,237,204,340/128,304,139.20
  6. Step 6: Final answer
    x = 106,362,766.80

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1.5x scale

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.