Home / 103,078.20-154,631.70-43,913.40

Finding the Fourth Proportional to 103,078.20, 154,631.70 and 43,913.40

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Solution

The fourth proportional to 103,078.20, 154,631.70 and 43,913.40 is: 65,876.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,078.20 : 154,631.70 = 43,913.40 : x
  2. Step 2: Convert to fraction form
    103,078.20/154,631.70 = 43,913.40/x
  3. Step 3: Cross multiply
    103,078.20x = 154,631.70 × 43,913.40
  4. Step 4: Simplify right side
    103,078.20x = 6,790,403,694.78
  5. Step 5: Solve for x
    x = 6,790,403,694.78/103,078.20
  6. Step 6: Final answer
    x = 65,876.23

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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.