Home / 114,720.30-172,080.45-91,100.70

Finding the Fourth Proportional to 114,720.30, 172,080.45 and 91,100.70

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Solution

The fourth proportional to 114,720.30, 172,080.45 and 91,100.70 is: 136,651.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,720.30 : 172,080.45 = 91,100.70 : x
  2. Step 2: Convert to fraction form
    114,720.30/172,080.45 = 91,100.70/x
  3. Step 3: Cross multiply
    114,720.30x = 172,080.45 × 91,100.70
  4. Step 4: Simplify right side
    114,720.30x = 15,676,649,451.32
  5. Step 5: Solve for x
    x = 15,676,649,451.32/114,720.30
  6. Step 6: Final answer
    x = 136,651.05

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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.