Home / 133,081.90-183,645.26-72,640.50

Finding the Fourth Proportional to 133,081.90, 183,645.26 and 72,640.50

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Solution

The fourth proportional to 133,081.90, 183,645.26 and 72,640.50 is: 100,239.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,081.90 : 183,645.26 = 72,640.50 : x
  2. Step 2: Convert to fraction form
    133,081.90/183,645.26 = 72,640.50/x
  3. Step 3: Cross multiply
    133,081.90x = 183,645.26 × 72,640.50
  4. Step 4: Simplify right side
    133,081.90x = 13,340,083,509.03
  5. Step 5: Solve for x
    x = 13,340,083,509.03/133,081.90
  6. Step 6: Final answer
    x = 100,239.65

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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.