Home / 128,310.60-177,053.17-70,942.17

Finding the Fourth Proportional to 128,310.60, 177,053.17 and 70,942.17

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Solution

The fourth proportional to 128,310.60, 177,053.17 and 70,942.17 is: 97,891.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,310.60 : 177,053.17 = 70,942.17 : x
  2. Step 2: Convert to fraction form
    128,310.60/177,053.17 = 70,942.17/x
  3. Step 3: Cross multiply
    128,310.60x = 177,053.17 × 70,942.17
  4. Step 4: Simplify right side
    128,310.60x = 12,560,534,845.20
  5. Step 5: Solve for x
    x = 12,560,534,845.20/128,310.60
  6. Step 6: Final answer
    x = 97,891.64

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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.