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Finding the Fourth Proportional to 162,664.40, 243,996.60 and 115,425.20

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Solution

The fourth proportional to 162,664.40, 243,996.60 and 115,425.20 is: 173,137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,664.40 : 243,996.60 = 115,425.20 : x
  2. Step 2: Convert to fraction form
    162,664.40/243,996.60 = 115,425.20/x
  3. Step 3: Cross multiply
    162,664.40x = 243,996.60 × 115,425.20
  4. Step 4: Simplify right side
    162,664.40x = 28,163,356,354.32
  5. Step 5: Solve for x
    x = 28,163,356,354.32/162,664.40
  6. Step 6: Final answer
    x = 173,137.80

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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.