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Finding the Fourth Proportional to 96,739.70, 145,109.55 and 73,120.10

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Solution

The fourth proportional to 96,739.70, 145,109.55 and 73,120.10 is: 109,680.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,739.70 : 145,109.55 = 73,120.10 : x
  2. Step 2: Convert to fraction form
    96,739.70/145,109.55 = 73,120.10/x
  3. Step 3: Cross multiply
    96,739.70x = 145,109.55 × 73,120.10
  4. Step 4: Simplify right side
    96,739.70x = 10,610,424,806.96
  5. Step 5: Solve for x
    x = 10,610,424,806.96/96,739.70
  6. Step 6: Final answer
    x = 109,680.15

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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.