Home / 120,780.74-180,973.83-73,410.32

Finding the Fourth Proportional to 120,780.74, 180,973.83 and 73,410.32

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Solution

The fourth proportional to 120,780.74, 180,973.83 and 73,410.32 is: 109,995.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,780.74 : 180,973.83 = 73,410.32 : x
  2. Step 2: Convert to fraction form
    120,780.74/180,973.83 = 73,410.32/x
  3. Step 3: Cross multiply
    120,780.74x = 180,973.83 × 73,410.32
  4. Step 4: Simplify right side
    120,780.74x = 13,285,347,224.36
  5. Step 5: Solve for x
    x = 13,285,347,224.36/120,780.74
  6. Step 6: Final answer
    x = 109,995.58

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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.