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Finding the Fourth Proportional to 168,090.55, 231,989.66 and 110,720.68

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Solution

The fourth proportional to 168,090.55, 231,989.66 and 110,720.68 is: 152,810.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,090.55 : 231,989.66 = 110,720.68 : x
  2. Step 2: Convert to fraction form
    168,090.55/231,989.66 = 110,720.68/x
  3. Step 3: Cross multiply
    168,090.55x = 231,989.66 × 110,720.68
  4. Step 4: Simplify right side
    168,090.55x = 25,686,053,153.67
  5. Step 5: Solve for x
    x = 25,686,053,153.67/168,090.55
  6. Step 6: Final answer
    x = 152,810.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.