Home / 138,049.43-190,038.07-102,171.83

Finding the Fourth Proportional to 138,049.43, 190,038.07 and 102,171.83

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Solution

The fourth proportional to 138,049.43, 190,038.07 and 102,171.83 is: 140,649.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,049.43 : 190,038.07 = 102,171.83 : x
  2. Step 2: Convert to fraction form
    138,049.43/190,038.07 = 102,171.83/x
  3. Step 3: Cross multiply
    138,049.43x = 190,038.07 × 102,171.83
  4. Step 4: Simplify right side
    138,049.43x = 19,416,537,381.57
  5. Step 5: Solve for x
    x = 19,416,537,381.57/138,049.43
  6. Step 6: Final answer
    x = 140,649.17

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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.