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Finding the Fourth Proportional to 102,987.10, 154,152.60 and 73,462.60

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Solution

The fourth proportional to 102,987.10, 154,152.60 and 73,462.60 is: 109,959.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,987.10 : 154,152.60 = 73,462.60 : x
  2. Step 2: Convert to fraction form
    102,987.10/154,152.60 = 73,462.60/x
  3. Step 3: Cross multiply
    102,987.10x = 154,152.60 × 73,462.60
  4. Step 4: Simplify right side
    102,987.10x = 11,324,450,792.76
  5. Step 5: Solve for x
    x = 11,324,450,792.76/102,987.10
  6. Step 6: Final answer
    x = 109,959.90

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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.