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Finding the Fourth Proportional to 163,720.85, 245,581.34 and 73,658.40

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Solution

The fourth proportional to 163,720.85, 245,581.34 and 73,658.40 is: 110,487.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,720.85 : 245,581.34 = 73,658.40 : x
  2. Step 2: Convert to fraction form
    163,720.85/245,581.34 = 73,658.40/x
  3. Step 3: Cross multiply
    163,720.85x = 245,581.34 × 73,658.40
  4. Step 4: Simplify right side
    163,720.85x = 18,089,127,285.03
  5. Step 5: Solve for x
    x = 18,089,127,285.03/163,720.85
  6. Step 6: Final answer
    x = 110,487.62

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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.