Home / 112,989.66-156,132.05-82,309.36

Finding the Fourth Proportional to 112,989.66, 156,132.05 and 82,309.36

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Solution

The fourth proportional to 112,989.66, 156,132.05 and 82,309.36 is: 113,737.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,989.66 : 156,132.05 = 82,309.36 : x
  2. Step 2: Convert to fraction form
    112,989.66/156,132.05 = 82,309.36/x
  3. Step 3: Cross multiply
    112,989.66x = 156,132.05 × 82,309.36
  4. Step 4: Simplify right side
    112,989.66x = 12,851,129,110.99
  5. Step 5: Solve for x
    x = 12,851,129,110.99/112,989.66
  6. Step 6: Final answer
    x = 113,737.21

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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.