Home / 115,427.20-173,140.80-76,028.80

Finding the Fourth Proportional to 115,427.20, 173,140.80 and 76,028.80

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Solution

The fourth proportional to 115,427.20, 173,140.80 and 76,028.80 is: 114,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,427.20 : 173,140.80 = 76,028.80 : x
  2. Step 2: Convert to fraction form
    115,427.20/173,140.80 = 76,028.80/x
  3. Step 3: Cross multiply
    115,427.20x = 173,140.80 × 76,028.80
  4. Step 4: Simplify right side
    115,427.20x = 13,163,687,255.04
  5. Step 5: Solve for x
    x = 13,163,687,255.04/115,427.20
  6. Step 6: Final answer
    x = 114,043.20

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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.