Home / 115,787.08-159,783.78-64,796.68

Finding the Fourth Proportional to 115,787.08, 159,783.78 and 64,796.68

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Solution

The fourth proportional to 115,787.08, 159,783.78 and 64,796.68 is: 89,418.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,787.08 : 159,783.78 = 64,796.68 : x
  2. Step 2: Convert to fraction form
    115,787.08/159,783.78 = 64,796.68/x
  3. Step 3: Cross multiply
    115,787.08x = 159,783.78 × 64,796.68
  4. Step 4: Simplify right side
    115,787.08x = 10,353,458,461.85
  5. Step 5: Solve for x
    x = 10,353,458,461.85/115,787.08
  6. Step 6: Final answer
    x = 89,418.08

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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.