Home / 137,682.11-190,002.88-80,319.53

Finding the Fourth Proportional to 137,682.11, 190,002.88 and 80,319.53

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Solution

The fourth proportional to 137,682.11, 190,002.88 and 80,319.53 is: 110,841.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,682.11 : 190,002.88 = 80,319.53 : x
  2. Step 2: Convert to fraction form
    137,682.11/190,002.88 = 80,319.53/x
  3. Step 3: Cross multiply
    137,682.11x = 190,002.88 × 80,319.53
  4. Step 4: Simplify right side
    137,682.11x = 15,260,942,595.65
  5. Step 5: Solve for x
    x = 15,260,942,595.65/137,682.11
  6. Step 6: Final answer
    x = 110,841.87

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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.