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Finding the Fourth Proportional to 170,345.72, 255,564.66 and 65,168.12

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Solution

The fourth proportional to 170,345.72, 255,564.66 and 65,168.12 is: 97,769.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,345.72 : 255,564.66 = 65,168.12 : x
  2. Step 2: Convert to fraction form
    170,345.72/255,564.66 = 65,168.12/x
  3. Step 3: Cross multiply
    170,345.72x = 255,564.66 × 65,168.12
  4. Step 4: Simplify right side
    170,345.72x = 16,654,668,430.64
  5. Step 5: Solve for x
    x = 16,654,668,430.64/170,345.72
  6. Step 6: Final answer
    x = 97,769.81

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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.