Home / 120,731.40-181,097.10-115,612.20

Finding the Fourth Proportional to 120,731.40, 181,097.10 and 115,612.20

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Solution

The fourth proportional to 120,731.40, 181,097.10 and 115,612.20 is: 173,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,731.40 : 181,097.10 = 115,612.20 : x
  2. Step 2: Convert to fraction form
    120,731.40/181,097.10 = 115,612.20/x
  3. Step 3: Cross multiply
    120,731.40x = 181,097.10 × 115,612.20
  4. Step 4: Simplify right side
    120,731.40x = 20,937,034,144.62
  5. Step 5: Solve for x
    x = 20,937,034,144.62/120,731.40
  6. Step 6: Final answer
    x = 173,418.30

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1.5x scale

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.