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Finding the Fourth Proportional to 79,130.80, 118,465.80 and 76,826.80

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Solution

The fourth proportional to 79,130.80, 118,465.80 and 76,826.80 is: 115,016.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,130.80 : 118,465.80 = 76,826.80 : x
  2. Step 2: Convert to fraction form
    79,130.80/118,465.80 = 76,826.80/x
  3. Step 3: Cross multiply
    79,130.80x = 118,465.80 × 76,826.80
  4. Step 4: Simplify right side
    79,130.80x = 9,101,348,323.44
  5. Step 5: Solve for x
    x = 9,101,348,323.44/79,130.80
  6. Step 6: Final answer
    x = 115,016.51

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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.