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Finding the Fourth Proportional to 145,456.60, 218,069.70 and 79,792.60

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Solution

The fourth proportional to 145,456.60, 218,069.70 and 79,792.60 is: 119,625.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,456.60 : 218,069.70 = 79,792.60 : x
  2. Step 2: Convert to fraction form
    145,456.60/218,069.70 = 79,792.60/x
  3. Step 3: Cross multiply
    145,456.60x = 218,069.70 × 79,792.60
  4. Step 4: Simplify right side
    145,456.60x = 17,400,348,344.22
  5. Step 5: Solve for x
    x = 17,400,348,344.22/145,456.60
  6. Step 6: Final answer
    x = 119,625.71

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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.