Home / 152,629.47-229,081.42-81,612.80

Finding the Fourth Proportional to 152,629.47, 229,081.42 and 81,612.80

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Solution

The fourth proportional to 152,629.47, 229,081.42 and 81,612.80 is: 122,492.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,629.47 : 229,081.42 = 81,612.80 : x
  2. Step 2: Convert to fraction form
    152,629.47/229,081.42 = 81,612.80/x
  3. Step 3: Cross multiply
    152,629.47x = 229,081.42 × 81,612.80
  4. Step 4: Simplify right side
    152,629.47x = 18,695,976,759.35
  5. Step 5: Solve for x
    x = 18,695,976,759.35/152,629.47
  6. Step 6: Final answer
    x = 122,492.58

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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.