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Finding the Fourth Proportional to 163,438.80, 245,028.60 and 89,566.80

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Solution

The fourth proportional to 163,438.80, 245,028.60 and 89,566.80 is: 134,279.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,438.80 : 245,028.60 = 89,566.80 : x
  2. Step 2: Convert to fraction form
    163,438.80/245,028.60 = 89,566.80/x
  3. Step 3: Cross multiply
    163,438.80x = 245,028.60 × 89,566.80
  4. Step 4: Simplify right side
    163,438.80x = 21,946,427,610.48
  5. Step 5: Solve for x
    x = 21,946,427,610.48/163,438.80
  6. Step 6: Final answer
    x = 134,279.18

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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.