Home / 126,300,623.40-189,450,935.10-85,485,954.60

Finding the Fourth Proportional to 126,300,623.40, 189,450,935.10 and 85,485,954.60

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Solution

The fourth proportional to 126,300,623.40, 189,450,935.10 and 85,485,954.60 is: 128,228,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,300,623.40 : 189,450,935.10 = 85,485,954.60 : x
  2. Step 2: Convert to fraction form
    126,300,623.40/189,450,935.10 = 85,485,954.60/x
  3. Step 3: Cross multiply
    126,300,623.40x = 189,450,935.10 × 85,485,954.60
  4. Step 4: Simplify right side
    126,300,623.40x = 16,195,394,036,886,144
  5. Step 5: Solve for x
    x = 16,195,394,036,886,144/126,300,623.40
  6. Step 6: Final answer
    x = 128,228,931.90

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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.