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Finding the Fourth Proportional to 162,969.80, 245,110.80 and 145,911.20

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Solution

The fourth proportional to 162,969.80, 245,110.80 and 145,911.20 is: 219,454.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,969.80 : 245,110.80 = 145,911.20 : x
  2. Step 2: Convert to fraction form
    162,969.80/245,110.80 = 145,911.20/x
  3. Step 3: Cross multiply
    162,969.80x = 245,110.80 × 145,911.20
  4. Step 4: Simplify right side
    162,969.80x = 35,764,410,960.96
  5. Step 5: Solve for x
    x = 35,764,410,960.96/162,969.80
  6. Step 6: Final answer
    x = 219,454.22

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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.