Home / 139,013,235.36-191,783,652.80-79,442,572.64

Finding the Fourth Proportional to 139,013,235.36, 191,783,652.80 and 79,442,572.64

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Solution

The fourth proportional to 139,013,235.36, 191,783,652.80 and 79,442,572.64 is: 109,599,540.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,013,235.36 : 191,783,652.80 = 79,442,572.64 : x
  2. Step 2: Convert to fraction form
    139,013,235.36/191,783,652.80 = 79,442,572.64/x
  3. Step 3: Cross multiply
    139,013,235.36x = 191,783,652.80 × 79,442,572.64
  4. Step 4: Simplify right side
    139,013,235.36x = 15,235,786,768,728,540
  5. Step 5: Solve for x
    x = 15,235,786,768,728,540/139,013,235.36
  6. Step 6: Final answer
    x = 109,599,540.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.