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Finding the Fourth Proportional to 163,469.14, 245,203.40 and 45,140.15

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Solution

The fourth proportional to 163,469.14, 245,203.40 and 45,140.15 is: 67,710.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,469.14 : 245,203.40 = 45,140.15 : x
  2. Step 2: Convert to fraction form
    163,469.14/245,203.40 = 45,140.15/x
  3. Step 3: Cross multiply
    163,469.14x = 245,203.40 × 45,140.15
  4. Step 4: Simplify right side
    163,469.14x = 11,068,518,982.37
  5. Step 5: Solve for x
    x = 11,068,518,982.37/163,469.14
  6. Step 6: Final answer
    x = 67,710.14

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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.