Home / 134,129.12-185,114.24-80,443.64

Finding the Fourth Proportional to 134,129.12, 185,114.24 and 80,443.64

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Solution

The fourth proportional to 134,129.12, 185,114.24 and 80,443.64 is: 111,021.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,129.12 : 185,114.24 = 80,443.64 : x
  2. Step 2: Convert to fraction form
    134,129.12/185,114.24 = 80,443.64/x
  3. Step 3: Cross multiply
    134,129.12x = 185,114.24 × 80,443.64
  4. Step 4: Simplify right side
    134,129.12x = 14,891,263,281.43
  5. Step 5: Solve for x
    x = 14,891,263,281.43/134,129.12
  6. Step 6: Final answer
    x = 111,021.85

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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.