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Finding the Fourth Proportional to 163,543.60, 225,687.48 and 90,943.60

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Solution

The fourth proportional to 163,543.60, 225,687.48 and 90,943.60 is: 125,500.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,543.60 : 225,687.48 = 90,943.60 : x
  2. Step 2: Convert to fraction form
    163,543.60/225,687.48 = 90,943.60/x
  3. Step 3: Cross multiply
    163,543.60x = 225,687.48 × 90,943.60
  4. Step 4: Simplify right side
    163,543.60x = 20,524,831,906.13
  5. Step 5: Solve for x
    x = 20,524,831,906.13/163,543.60
  6. Step 6: Final answer
    x = 125,500.67

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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.