Home / 145,861,286.40-218,825,107.20-85,245,811.20

Finding the Fourth Proportional to 145,861,286.40, 218,825,107.20 and 85,245,811.20

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Solution

The fourth proportional to 145,861,286.40, 218,825,107.20 and 85,245,811.20 is: 127,888,106.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,861,286.40 : 218,825,107.20 = 85,245,811.20 : x
  2. Step 2: Convert to fraction form
    145,861,286.40/218,825,107.20 = 85,245,811.20/x
  3. Step 3: Cross multiply
    145,861,286.40x = 218,825,107.20 × 85,245,811.20
  4. Step 4: Simplify right side
    145,861,286.40x = 18,653,923,774,190,960
  5. Step 5: Solve for x
    x = 18,653,923,774,190,960/145,861,286.40
  6. Step 6: Final answer
    x = 127,888,106.81

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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.