Home / 68,090.51-102,145.34-18,172.24

Finding the Fourth Proportional to 68,090.51, 102,145.34 and 18,172.24

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Solution

The fourth proportional to 68,090.51, 102,145.34 and 18,172.24 is: 27,260.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,090.51 : 102,145.34 = 18,172.24 : x
  2. Step 2: Convert to fraction form
    68,090.51/102,145.34 = 18,172.24/x
  3. Step 3: Cross multiply
    68,090.51x = 102,145.34 × 18,172.24
  4. Step 4: Simplify right side
    68,090.51x = 1,856,209,031.77
  5. Step 5: Solve for x
    x = 1,856,209,031.77/68,090.51
  6. Step 6: Final answer
    x = 27,260.91

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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.