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Finding the Fourth Proportional to 97,470.40, 146,194.80 and 79,909.60

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Solution

The fourth proportional to 97,470.40, 146,194.80 and 79,909.60 is: 119,855.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,470.40 : 146,194.80 = 79,909.60 : x
  2. Step 2: Convert to fraction form
    97,470.40/146,194.80 = 79,909.60/x
  3. Step 3: Cross multiply
    97,470.40x = 146,194.80 × 79,909.60
  4. Step 4: Simplify right side
    97,470.40x = 11,682,367,990.08
  5. Step 5: Solve for x
    x = 11,682,367,990.08/97,470.40
  6. Step 6: Final answer
    x = 119,855.55

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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.