Home / 137,375.62-189,480.94-85,718.74

Finding the Fourth Proportional to 137,375.62, 189,480.94 and 85,718.74

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Solution

The fourth proportional to 137,375.62, 189,480.94 and 85,718.74 is: 118,231.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,375.62 : 189,480.94 = 85,718.74 : x
  2. Step 2: Convert to fraction form
    137,375.62/189,480.94 = 85,718.74/x
  3. Step 3: Cross multiply
    137,375.62x = 189,480.94 × 85,718.74
  4. Step 4: Simplify right side
    137,375.62x = 16,242,067,430.82
  5. Step 5: Solve for x
    x = 16,242,067,430.82/137,375.62
  6. Step 6: Final answer
    x = 118,231.08

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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.