Home / 138,738,879.60-191,471,411.16-76,878,622.32

Finding the Fourth Proportional to 138,738,879.60, 191,471,411.16 and 76,878,622.32

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Solution

The fourth proportional to 138,738,879.60, 191,471,411.16 and 76,878,622.32 is: 106,099,013.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,738,879.60 : 191,471,411.16 = 76,878,622.32 : x
  2. Step 2: Convert to fraction form
    138,738,879.60/191,471,411.16 = 76,878,622.32/x
  3. Step 3: Cross multiply
    138,738,879.60x = 191,471,411.16 × 76,878,622.32
  4. Step 4: Simplify right side
    138,738,879.60x = 14,720,058,303,647,072
  5. Step 5: Solve for x
    x = 14,720,058,303,647,072/138,738,879.60
  6. Step 6: Final answer
    x = 106,099,013.82

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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.