Home / 136,642.23-188,566.54-76,216.79

Finding the Fourth Proportional to 136,642.23, 188,566.54 and 76,216.79

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Solution

The fourth proportional to 136,642.23, 188,566.54 and 76,216.79 is: 105,179.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,642.23 : 188,566.54 = 76,216.79 : x
  2. Step 2: Convert to fraction form
    136,642.23/188,566.54 = 76,216.79/x
  3. Step 3: Cross multiply
    136,642.23x = 188,566.54 × 76,216.79
  4. Step 4: Simplify right side
    136,642.23x = 14,371,936,582.08
  5. Step 5: Solve for x
    x = 14,371,936,582.08/136,642.23
  6. Step 6: Final answer
    x = 105,179.31

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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.