Home / 129,634.05-178,977.56-105,817.35

Finding the Fourth Proportional to 129,634.05, 178,977.56 and 105,817.35

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Solution

The fourth proportional to 129,634.05, 178,977.56 and 105,817.35 is: 146,095.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,634.05 : 178,977.56 = 105,817.35 : x
  2. Step 2: Convert to fraction form
    129,634.05/178,977.56 = 105,817.35/x
  3. Step 3: Cross multiply
    129,634.05x = 178,977.56 × 105,817.35
  4. Step 4: Simplify right side
    129,634.05x = 18,938,930,579.58
  5. Step 5: Solve for x
    x = 18,938,930,579.58/129,634.05
  6. Step 6: Final answer
    x = 146,095.34

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1.5x scale

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.