Home / 205,916.45-308,925.30-70,982.60

Finding the Fourth Proportional to 205,916.45, 308,925.30 and 70,982.60

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Solution

The fourth proportional to 205,916.45, 308,925.30 and 70,982.60 is: 106,491.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,916.45 : 308,925.30 = 70,982.60 : x
  2. Step 2: Convert to fraction form
    205,916.45/308,925.30 = 70,982.60/x
  3. Step 3: Cross multiply
    205,916.45x = 308,925.30 × 70,982.60
  4. Step 4: Simplify right side
    205,916.45x = 21,928,320,999.78
  5. Step 5: Solve for x
    x = 21,928,320,999.78/205,916.45
  6. Step 6: Final answer
    x = 106,491.35

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1.5x scale

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.