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Finding the Fourth Proportional to 104,909.60, 157,364.40 and 67,584.80

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Solution

The fourth proportional to 104,909.60, 157,364.40 and 67,584.80 is: 101,377.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,909.60 : 157,364.40 = 67,584.80 : x
  2. Step 2: Convert to fraction form
    104,909.60/157,364.40 = 67,584.80/x
  3. Step 3: Cross multiply
    104,909.60x = 157,364.40 × 67,584.80
  4. Step 4: Simplify right side
    104,909.60x = 10,635,441,501.12
  5. Step 5: Solve for x
    x = 10,635,441,501.12/104,909.60
  6. Step 6: Final answer
    x = 101,377.20

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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.