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Finding the Fourth Proportional to 181,638.40, 272,425.20 and 114,959.20

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Solution

The fourth proportional to 181,638.40, 272,425.20 and 114,959.20 is: 172,418.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,638.40 : 272,425.20 = 114,959.20 : x
  2. Step 2: Convert to fraction form
    181,638.40/272,425.20 = 114,959.20/x
  3. Step 3: Cross multiply
    181,638.40x = 272,425.20 × 114,959.20
  4. Step 4: Simplify right side
    181,638.40x = 31,317,783,051.84
  5. Step 5: Solve for x
    x = 31,317,783,051.84/181,638.40
  6. Step 6: Final answer
    x = 172,418.29

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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.