Home / 136,644.24-188,569.30-76,218.80

Finding the Fourth Proportional to 136,644.24, 188,569.30 and 76,218.80

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Solution

The fourth proportional to 136,644.24, 188,569.30 and 76,218.80 is: 105,182.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,644.24 : 188,569.30 = 76,218.80 : x
  2. Step 2: Convert to fraction form
    136,644.24/188,569.30 = 76,218.80/x
  3. Step 3: Cross multiply
    136,644.24x = 188,569.30 × 76,218.80
  4. Step 4: Simplify right side
    136,644.24x = 14,372,525,762.84
  5. Step 5: Solve for x
    x = 14,372,525,762.84/136,644.24
  6. Step 6: Final answer
    x = 105,182.08

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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.