Home / 129,570.06-178,745.56-75,821.80

Finding the Fourth Proportional to 129,570.06, 178,745.56 and 75,821.80

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Solution

The fourth proportional to 129,570.06, 178,745.56 and 75,821.80 is: 104,598.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,570.06 : 178,745.56 = 75,821.80 : x
  2. Step 2: Convert to fraction form
    129,570.06/178,745.56 = 75,821.80/x
  3. Step 3: Cross multiply
    129,570.06x = 178,745.56 × 75,821.80
  4. Step 4: Simplify right side
    129,570.06x = 13,552,810,101.21
  5. Step 5: Solve for x
    x = 13,552,810,101.21/129,570.06
  6. Step 6: Final answer
    x = 104,598.32

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1.5x scale

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.