Home / 128,304,718.20-192,315,359.70-70,838,231.40

Finding the Fourth Proportional to 128,304,718.20, 192,315,359.70 and 70,838,231.40

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Solution

The fourth proportional to 128,304,718.20, 192,315,359.70 and 70,838,231.40 is: 106,179,103.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,718.20 : 192,315,359.70 = 70,838,231.40 : x
  2. Step 2: Convert to fraction form
    128,304,718.20/192,315,359.70 = 70,838,231.40/x
  3. Step 3: Cross multiply
    128,304,718.20x = 192,315,359.70 × 70,838,231.40
  4. Step 4: Simplify right side
    128,304,718.20x = 13,623,279,952,202,834
  5. Step 5: Solve for x
    x = 13,623,279,952,202,834/128,304,718.20
  6. Step 6: Final answer
    x = 106,179,103.49

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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.