Home / 106,513.30-159,709.20-39,955.60

Finding the Fourth Proportional to 106,513.30, 159,709.20 and 39,955.60

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Solution

The fourth proportional to 106,513.30, 159,709.20 and 39,955.60 is: 59,910.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,513.30 : 159,709.20 = 39,955.60 : x
  2. Step 2: Convert to fraction form
    106,513.30/159,709.20 = 39,955.60/x
  3. Step 3: Cross multiply
    106,513.30x = 159,709.20 × 39,955.60
  4. Step 4: Simplify right side
    106,513.30x = 6,381,276,911.52
  5. Step 5: Solve for x
    x = 6,381,276,911.52/106,513.30
  6. Step 6: Final answer
    x = 59,910.61

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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.