Home / 136,788.49-188,763.16-85,828.69

Finding the Fourth Proportional to 136,788.49, 188,763.16 and 85,828.69

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Solution

The fourth proportional to 136,788.49, 188,763.16 and 85,828.69 is: 118,440.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,788.49 : 188,763.16 = 85,828.69 : x
  2. Step 2: Convert to fraction form
    136,788.49/188,763.16 = 85,828.69/x
  3. Step 3: Cross multiply
    136,788.49x = 188,763.16 × 85,828.69
  4. Step 4: Simplify right side
    136,788.49x = 16,201,293,370.10
  5. Step 5: Solve for x
    x = 16,201,293,370.10/136,788.49
  6. Step 6: Final answer
    x = 118,440.48

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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.