Home / 112,039.20-168,058.80-78,796.80

Finding the Fourth Proportional to 112,039.20, 168,058.80 and 78,796.80

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Solution

The fourth proportional to 112,039.20, 168,058.80 and 78,796.80 is: 118,195.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,039.20 : 168,058.80 = 78,796.80 : x
  2. Step 2: Convert to fraction form
    112,039.20/168,058.80 = 78,796.80/x
  3. Step 3: Cross multiply
    112,039.20x = 168,058.80 × 78,796.80
  4. Step 4: Simplify right side
    112,039.20x = 13,242,495,651.84
  5. Step 5: Solve for x
    x = 13,242,495,651.84/112,039.20
  6. Step 6: Final answer
    x = 118,195.20

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1.5x scale

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.