Home / 96,778.96-145,032.30-76,969.60

Finding the Fourth Proportional to 96,778.96, 145,032.30 and 76,969.60

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Solution

The fourth proportional to 96,778.96, 145,032.30 and 76,969.60 is: 115,346.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,778.96 : 145,032.30 = 76,969.60 : x
  2. Step 2: Convert to fraction form
    96,778.96/145,032.30 = 76,969.60/x
  3. Step 3: Cross multiply
    96,778.96x = 145,032.30 × 76,969.60
  4. Step 4: Simplify right side
    96,778.96x = 11,163,078,118.08
  5. Step 5: Solve for x
    x = 11,163,078,118.08/96,778.96
  6. Step 6: Final answer
    x = 115,346.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.