Home / 102,917.40-154,505.70-55,570.20

Finding the Fourth Proportional to 102,917.40, 154,505.70 and 55,570.20

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Solution

The fourth proportional to 102,917.40, 154,505.70 and 55,570.20 is: 83,425.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,917.40 : 154,505.70 = 55,570.20 : x
  2. Step 2: Convert to fraction form
    102,917.40/154,505.70 = 55,570.20/x
  3. Step 3: Cross multiply
    102,917.40x = 154,505.70 × 55,570.20
  4. Step 4: Simplify right side
    102,917.40x = 8,585,912,650.14
  5. Step 5: Solve for x
    x = 8,585,912,650.14/102,917.40
  6. Step 6: Final answer
    x = 83,425.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.