Home / 144,438.78-199,335.66-80,782.50

Finding the Fourth Proportional to 144,438.78, 199,335.66 and 80,782.50

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Solution

The fourth proportional to 144,438.78, 199,335.66 and 80,782.50 is: 111,485.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,438.78 : 199,335.66 = 80,782.50 : x
  2. Step 2: Convert to fraction form
    144,438.78/199,335.66 = 80,782.50/x
  3. Step 3: Cross multiply
    144,438.78x = 199,335.66 × 80,782.50
  4. Step 4: Simplify right side
    144,438.78x = 16,102,832,953.95
  5. Step 5: Solve for x
    x = 16,102,832,953.95/144,438.78
  6. Step 6: Final answer
    x = 111,485.52

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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.