Home / 102,388.36-140,272.90-98,553.28

Finding the Fourth Proportional to 102,388.36, 140,272.90 and 98,553.28

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Solution

The fourth proportional to 102,388.36, 140,272.90 and 98,553.28 is: 135,018.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,388.36 : 140,272.90 = 98,553.28 : x
  2. Step 2: Convert to fraction form
    102,388.36/140,272.90 = 98,553.28/x
  3. Step 3: Cross multiply
    102,388.36x = 140,272.90 × 98,553.28
  4. Step 4: Simplify right side
    102,388.36x = 13,824,354,390.11
  5. Step 5: Solve for x
    x = 13,824,354,390.11/102,388.36
  6. Step 6: Final answer
    x = 135,018.81

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.