Home / 136,939.42-188,975.10-76,520.47

Finding the Fourth Proportional to 136,939.42, 188,975.10 and 76,520.47

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Solution

The fourth proportional to 136,939.42, 188,975.10 and 76,520.47 is: 105,597.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,939.42 : 188,975.10 = 76,520.47 : x
  2. Step 2: Convert to fraction form
    136,939.42/188,975.10 = 76,520.47/x
  3. Step 3: Cross multiply
    136,939.42x = 188,975.10 × 76,520.47
  4. Step 4: Simplify right side
    136,939.42x = 14,460,463,470.30
  5. Step 5: Solve for x
    x = 14,460,463,470.30/136,939.42
  6. Step 6: Final answer
    x = 105,597.52

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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.