Home / 126,145,125.80-189,217,688.70-112,540,236.20

Finding the Fourth Proportional to 126,145,125.80, 189,217,688.70 and 112,540,236.20

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Solution

The fourth proportional to 126,145,125.80, 189,217,688.70 and 112,540,236.20 is: 168,810,354.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,145,125.80 : 189,217,688.70 = 112,540,236.20 : x
  2. Step 2: Convert to fraction form
    126,145,125.80/189,217,688.70 = 112,540,236.20/x
  3. Step 3: Cross multiply
    126,145,125.80x = 189,217,688.70 × 112,540,236.20
  4. Step 4: Simplify right side
    126,145,125.80x = 21,294,603,379,516,072
  5. Step 5: Solve for x
    x = 21,294,603,379,516,072/126,145,125.80
  6. Step 6: Final answer
    x = 168,810,354.30

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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.