Home / 137,014.20-189,079.53-80,425.58

Finding the Fourth Proportional to 137,014.20, 189,079.53 and 80,425.58

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Solution

The fourth proportional to 137,014.20, 189,079.53 and 80,425.58 is: 110,987.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,014.20 : 189,079.53 = 80,425.58 : x
  2. Step 2: Convert to fraction form
    137,014.20/189,079.53 = 80,425.58/x
  3. Step 3: Cross multiply
    137,014.20x = 189,079.53 × 80,425.58
  4. Step 4: Simplify right side
    137,014.20x = 15,206,830,393.68
  5. Step 5: Solve for x
    x = 15,206,830,393.68/137,014.20
  6. Step 6: Final answer
    x = 110,987.26

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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.