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Finding the Fourth Proportional to 131,001.56, 180,772.44 and 74,402

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Solution

The fourth proportional to 131,001.56, 180,772.44 and 74,402 is: 102,669.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,001.56 : 180,772.44 = 74,402 : x
  2. Step 2: Convert to fraction form
    131,001.56/180,772.44 = 74,402/x
  3. Step 3: Cross multiply
    131,001.56x = 180,772.44 × 74,402
  4. Step 4: Simplify right side
    131,001.56x = 13,449,831,080.88
  5. Step 5: Solve for x
    x = 13,449,831,080.88/131,001.56
  6. Step 6: Final answer
    x = 102,669.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.