Home / 136,470.31-188,326.51-76,039.65

Finding the Fourth Proportional to 136,470.31, 188,326.51 and 76,039.65

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Solution

The fourth proportional to 136,470.31, 188,326.51 and 76,039.65 is: 104,933.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,470.31 : 188,326.51 = 76,039.65 : x
  2. Step 2: Convert to fraction form
    136,470.31/188,326.51 = 76,039.65/x
  3. Step 3: Cross multiply
    136,470.31x = 188,326.51 × 76,039.65
  4. Step 4: Simplify right side
    136,470.31x = 14,320,280,964.49
  5. Step 5: Solve for x
    x = 14,320,280,964.49/136,470.31
  6. Step 6: Final answer
    x = 104,933.31

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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.