Home / 103,628.60-155,442.90-91,964.60

Finding the Fourth Proportional to 103,628.60, 155,442.90 and 91,964.60

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Solution

The fourth proportional to 103,628.60, 155,442.90 and 91,964.60 is: 137,946.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.60 : 155,442.90 = 91,964.60 : x
  2. Step 2: Convert to fraction form
    103,628.60/155,442.90 = 91,964.60/x
  3. Step 3: Cross multiply
    103,628.60x = 155,442.90 × 91,964.60
  4. Step 4: Simplify right side
    103,628.60x = 14,295,244,121.34
  5. Step 5: Solve for x
    x = 14,295,244,121.34/103,628.60
  6. Step 6: Final answer
    x = 137,946.90

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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.