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Finding the Fourth Proportional to 163,500.80, 245,121.60 and 89,628.80

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Solution

The fourth proportional to 163,500.80, 245,121.60 and 89,628.80 is: 134,372.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,500.80 : 245,121.60 = 89,628.80 : x
  2. Step 2: Convert to fraction form
    163,500.80/245,121.60 = 89,628.80/x
  3. Step 3: Cross multiply
    163,500.80x = 245,121.60 × 89,628.80
  4. Step 4: Simplify right side
    163,500.80x = 21,969,954,862.08
  5. Step 5: Solve for x
    x = 21,969,954,862.08/163,500.80
  6. Step 6: Final answer
    x = 134,372.16

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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.