Home / 68,837.20-103,235.90-18,918.92

Finding the Fourth Proportional to 68,837.20, 103,235.90 and 18,918.92

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Solution

The fourth proportional to 68,837.20, 103,235.90 and 18,918.92 is: 28,372.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,837.20 : 103,235.90 = 18,918.92 : x
  2. Step 2: Convert to fraction form
    68,837.20/103,235.90 = 18,918.92/x
  3. Step 3: Cross multiply
    68,837.20x = 103,235.90 × 18,918.92
  4. Step 4: Simplify right side
    68,837.20x = 1,953,111,733.23
  5. Step 5: Solve for x
    x = 1,953,111,733.23/68,837.20
  6. Step 6: Final answer
    x = 28,372.91

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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.