Home / 210,115.45-315,175.96-66,016.59

Finding the Fourth Proportional to 210,115.45, 315,175.96 and 66,016.59

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Solution

The fourth proportional to 210,115.45, 315,175.96 and 66,016.59 is: 99,025.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,115.45 : 315,175.96 = 66,016.59 : x
  2. Step 2: Convert to fraction form
    210,115.45/315,175.96 = 66,016.59/x
  3. Step 3: Cross multiply
    210,115.45x = 315,175.96 × 66,016.59
  4. Step 4: Simplify right side
    210,115.45x = 20,806,841,029.79
  5. Step 5: Solve for x
    x = 20,806,841,029.79/210,115.45
  6. Step 6: Final answer
    x = 99,025.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.