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Finding the Fourth Proportional to 97,679.60, 146,346.60 and 91,458.80

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Solution

The fourth proportional to 97,679.60, 146,346.60 and 91,458.80 is: 137,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,679.60 : 146,346.60 = 91,458.80 : x
  2. Step 2: Convert to fraction form
    97,679.60/146,346.60 = 91,458.80/x
  3. Step 3: Cross multiply
    97,679.60x = 146,346.60 × 91,458.80
  4. Step 4: Simplify right side
    97,679.60x = 13,384,684,420.08
  5. Step 5: Solve for x
    x = 13,384,684,420.08/97,679.60
  6. Step 6: Final answer
    x = 137,026.40

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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.