Home / 103,668.06-155,499.21-72,523.74

Finding the Fourth Proportional to 103,668.06, 155,499.21 and 72,523.74

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Solution

The fourth proportional to 103,668.06, 155,499.21 and 72,523.74 is: 108,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,668.06 : 155,499.21 = 72,523.74 : x
  2. Step 2: Convert to fraction form
    103,668.06/155,499.21 = 72,523.74/x
  3. Step 3: Cross multiply
    103,668.06x = 155,499.21 × 72,523.74
  4. Step 4: Simplify right side
    103,668.06x = 11,277,384,276.25
  5. Step 5: Solve for x
    x = 11,277,384,276.25/103,668.06
  6. Step 6: Final answer
    x = 108,783.60

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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.