Home / 138,739,444.92-191,446,480.40-76,848,219.72

Finding the Fourth Proportional to 138,739,444.92, 191,446,480.40 and 76,848,219.72

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Solution

The fourth proportional to 138,739,444.92, 191,446,480.40 and 76,848,219.72 is: 106,042,814.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,739,444.92 : 191,446,480.40 = 76,848,219.72 : x
  2. Step 2: Convert to fraction form
    138,739,444.92/191,446,480.40 = 76,848,219.72/x
  3. Step 3: Cross multiply
    138,739,444.92x = 191,446,480.40 × 76,848,219.72
  4. Step 4: Simplify right side
    138,739,444.92x = 14,712,321,190,015,632
  5. Step 5: Solve for x
    x = 14,712,321,190,015,632/138,739,444.92
  6. Step 6: Final answer
    x = 106,042,814.27

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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.