Home / 101,971.62-140,758.74-87,573.65

Finding the Fourth Proportional to 101,971.62, 140,758.74 and 87,573.65

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Solution

The fourth proportional to 101,971.62, 140,758.74 and 87,573.65 is: 120,884.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,971.62 : 140,758.74 = 87,573.65 : x
  2. Step 2: Convert to fraction form
    101,971.62/140,758.74 = 87,573.65/x
  3. Step 3: Cross multiply
    101,971.62x = 140,758.74 × 87,573.65
  4. Step 4: Simplify right side
    101,971.62x = 12,326,755,927.41
  5. Step 5: Solve for x
    x = 12,326,755,927.41/101,971.62
  6. Step 6: Final answer
    x = 120,884.18

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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.