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Finding the Fourth Proportional to 97,708.80, 146,563.20 and 86,035.20

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Solution

The fourth proportional to 97,708.80, 146,563.20 and 86,035.20 is: 129,052.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,708.80 : 146,563.20 = 86,035.20 : x
  2. Step 2: Convert to fraction form
    97,708.80/146,563.20 = 86,035.20/x
  3. Step 3: Cross multiply
    97,708.80x = 146,563.20 × 86,035.20
  4. Step 4: Simplify right side
    97,708.80x = 12,609,594,224.64
  5. Step 5: Solve for x
    x = 12,609,594,224.64/97,708.80
  6. Step 6: Final answer
    x = 129,052.80

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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.