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Finding the Fourth Proportional to 96,989.60, 145,311.60 and 83,165.60

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Solution

The fourth proportional to 96,989.60, 145,311.60 and 83,165.60 is: 124,600.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,989.60 : 145,311.60 = 83,165.60 : x
  2. Step 2: Convert to fraction form
    96,989.60/145,311.60 = 83,165.60/x
  3. Step 3: Cross multiply
    96,989.60x = 145,311.60 × 83,165.60
  4. Step 4: Simplify right side
    96,989.60x = 12,084,926,400.96
  5. Step 5: Solve for x
    x = 12,084,926,400.96/96,989.60
  6. Step 6: Final answer
    x = 124,600.23

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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.