Home / 70,128,400.80-105,192,601.20-67,441,015.20

Finding the Fourth Proportional to 70,128,400.80, 105,192,601.20 and 67,441,015.20

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Solution

The fourth proportional to 70,128,400.80, 105,192,601.20 and 67,441,015.20 is: 101,161,522.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,128,400.80 : 105,192,601.20 = 67,441,015.20 : x
  2. Step 2: Convert to fraction form
    70,128,400.80/105,192,601.20 = 67,441,015.20/x
  3. Step 3: Cross multiply
    70,128,400.80x = 105,192,601.20 × 67,441,015.20
  4. Step 4: Simplify right side
    70,128,400.80x = 7,094,295,816,456,739
  5. Step 5: Solve for x
    x = 7,094,295,816,456,739/70,128,400.80
  6. Step 6: Final answer
    x = 101,161,522.80

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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.