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Finding the Fourth Proportional to 97,485.80, 146,228.70 and 80,864.60

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Solution

The fourth proportional to 97,485.80, 146,228.70 and 80,864.60 is: 121,296.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,485.80 : 146,228.70 = 80,864.60 : x
  2. Step 2: Convert to fraction form
    97,485.80/146,228.70 = 80,864.60/x
  3. Step 3: Cross multiply
    97,485.80x = 146,228.70 × 80,864.60
  4. Step 4: Simplify right side
    97,485.80x = 11,824,725,334.02
  5. Step 5: Solve for x
    x = 11,824,725,334.02/97,485.80
  6. Step 6: Final answer
    x = 121,296.90

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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.