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Finding the Fourth Proportional to 136,751.04, 205,100.55 and 57,920.58

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Solution

The fourth proportional to 136,751.04, 205,100.55 and 57,920.58 is: 86,869.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,751.04 : 205,100.55 = 57,920.58 : x
  2. Step 2: Convert to fraction form
    136,751.04/205,100.55 = 57,920.58/x
  3. Step 3: Cross multiply
    136,751.04x = 205,100.55 × 57,920.58
  4. Step 4: Simplify right side
    136,751.04x = 11,879,542,814.32
  5. Step 5: Solve for x
    x = 11,879,542,814.32/136,751.04
  6. Step 6: Final answer
    x = 86,869.85

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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.