Home / 138,825.40-191,546.10-84,376.62

Finding the Fourth Proportional to 138,825.40, 191,546.10 and 84,376.62

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Solution

The fourth proportional to 138,825.40, 191,546.10 and 84,376.62 is: 116,419.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,825.40 : 191,546.10 = 84,376.62 : x
  2. Step 2: Convert to fraction form
    138,825.40/191,546.10 = 84,376.62/x
  3. Step 3: Cross multiply
    138,825.40x = 191,546.10 × 84,376.62
  4. Step 4: Simplify right side
    138,825.40x = 16,162,012,492.18
  5. Step 5: Solve for x
    x = 16,162,012,492.18/138,825.40
  6. Step 6: Final answer
    x = 116,419.71

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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.