Home / 128,279.44-192,437.26-39,540.16

Finding the Fourth Proportional to 128,279.44, 192,437.26 and 39,540.16

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Solution

The fourth proportional to 128,279.44, 192,437.26 and 39,540.16 is: 59,315.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,279.44 : 192,437.26 = 39,540.16 : x
  2. Step 2: Convert to fraction form
    128,279.44/192,437.26 = 39,540.16/x
  3. Step 3: Cross multiply
    128,279.44x = 192,437.26 × 39,540.16
  4. Step 4: Simplify right side
    128,279.44x = 7,609,000,050.36
  5. Step 5: Solve for x
    x = 7,609,000,050.36/128,279.44
  6. Step 6: Final answer
    x = 59,315.82

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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.