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Finding the Fourth Proportional to 162,090.40, 243,135.60 and 114,851.20

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Solution

The fourth proportional to 162,090.40, 243,135.60 and 114,851.20 is: 172,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,090.40 : 243,135.60 = 114,851.20 : x
  2. Step 2: Convert to fraction form
    162,090.40/243,135.60 = 114,851.20/x
  3. Step 3: Cross multiply
    162,090.40x = 243,135.60 × 114,851.20
  4. Step 4: Simplify right side
    162,090.40x = 27,924,415,422.72
  5. Step 5: Solve for x
    x = 27,924,415,422.72/162,090.40
  6. Step 6: Final answer
    x = 172,276.80

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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.