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Finding the Fourth Proportional to 161,989.60, 242,967.98 and 43,672.90

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Solution

The fourth proportional to 161,989.60, 242,967.98 and 43,672.90 is: 65,504.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,989.60 : 242,967.98 = 43,672.90 : x
  2. Step 2: Convert to fraction form
    161,989.60/242,967.98 = 43,672.90/x
  3. Step 3: Cross multiply
    161,989.60x = 242,967.98 × 43,672.90
  4. Step 4: Simplify right side
    161,989.60x = 10,611,116,293.74
  5. Step 5: Solve for x
    x = 10,611,116,293.74/161,989.60
  6. Step 6: Final answer
    x = 65,504.92

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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.