Home / 115,784.22-159,778.79-64,103.62

Finding the Fourth Proportional to 115,784.22, 159,778.79 and 64,103.62

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Solution

The fourth proportional to 115,784.22, 159,778.79 and 64,103.62 is: 88,461.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,784.22 : 159,778.79 = 64,103.62 : x
  2. Step 2: Convert to fraction form
    115,784.22/159,778.79 = 64,103.62/x
  3. Step 3: Cross multiply
    115,784.22x = 159,778.79 × 64,103.62
  4. Step 4: Simplify right side
    115,784.22x = 10,242,398,140.90
  5. Step 5: Solve for x
    x = 10,242,398,140.90/115,784.22
  6. Step 6: Final answer
    x = 88,461.09

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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.