Home / 136,780.08-188,766-76,362.60

Finding the Fourth Proportional to 136,780.08, 188,766 and 76,362.60

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Solution

The fourth proportional to 136,780.08, 188,766 and 76,362.60 is: 105,385.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,780.08 : 188,766 = 76,362.60 : x
  2. Step 2: Convert to fraction form
    136,780.08/188,766 = 76,362.60/x
  3. Step 3: Cross multiply
    136,780.08x = 188,766 × 76,362.60
  4. Step 4: Simplify right side
    136,780.08x = 14,414,662,551.60
  5. Step 5: Solve for x
    x = 14,414,662,551.60/136,780.08
  6. Step 6: Final answer
    x = 105,385.69

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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.