Home / 115,777.12-159,718.80-68,029.60

Finding the Fourth Proportional to 115,777.12, 159,718.80 and 68,029.60

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Solution

The fourth proportional to 115,777.12, 159,718.80 and 68,029.60 is: 93,849.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,777.12 : 159,718.80 = 68,029.60 : x
  2. Step 2: Convert to fraction form
    115,777.12/159,718.80 = 68,029.60/x
  3. Step 3: Cross multiply
    115,777.12x = 159,718.80 × 68,029.60
  4. Step 4: Simplify right side
    115,777.12x = 10,865,606,076.48
  5. Step 5: Solve for x
    x = 10,865,606,076.48/115,777.12
  6. Step 6: Final answer
    x = 93,849.34

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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.