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Finding the Fourth Proportional to 103,661.65, 155,492.48 and 51,173.65

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Solution

The fourth proportional to 103,661.65, 155,492.48 and 51,173.65 is: 76,760.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,661.65 : 155,492.48 = 51,173.65 : x
  2. Step 2: Convert to fraction form
    103,661.65/155,492.48 = 51,173.65/x
  3. Step 3: Cross multiply
    103,661.65x = 155,492.48 × 51,173.65
  4. Step 4: Simplify right side
    103,661.65x = 7,957,117,749.15
  5. Step 5: Solve for x
    x = 7,957,117,749.15/103,661.65
  6. Step 6: Final answer
    x = 76,760.48

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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.