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Finding the Fourth Proportional to 97,296.21, 145,659.96 and 87,957.72

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Solution

The fourth proportional to 97,296.21, 145,659.96 and 87,957.72 is: 131,679.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,296.21 : 145,659.96 = 87,957.72 : x
  2. Step 2: Convert to fraction form
    97,296.21/145,659.96 = 87,957.72/x
  3. Step 3: Cross multiply
    97,296.21x = 145,659.96 × 87,957.72
  4. Step 4: Simplify right side
    97,296.21x = 12,811,917,976.89
  5. Step 5: Solve for x
    x = 12,811,917,976.89/97,296.21
  6. Step 6: Final answer
    x = 131,679.52

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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.