Home / 168,906.90-253,360.35-155,128.80

Finding the Fourth Proportional to 168,906.90, 253,360.35 and 155,128.80

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Solution

The fourth proportional to 168,906.90, 253,360.35 and 155,128.80 is: 232,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,906.90 : 253,360.35 = 155,128.80 : x
  2. Step 2: Convert to fraction form
    168,906.90/253,360.35 = 155,128.80/x
  3. Step 3: Cross multiply
    168,906.90x = 253,360.35 × 155,128.80
  4. Step 4: Simplify right side
    168,906.90x = 39,303,487,063.08
  5. Step 5: Solve for x
    x = 39,303,487,063.08/168,906.90
  6. Step 6: Final answer
    x = 232,693.20

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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.