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Finding the Fourth Proportional to 109,166.40, 163,360.80 and 75,729.60

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Solution

The fourth proportional to 109,166.40, 163,360.80 and 75,729.60 is: 113,324.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,166.40 : 163,360.80 = 75,729.60 : x
  2. Step 2: Convert to fraction form
    109,166.40/163,360.80 = 75,729.60/x
  3. Step 3: Cross multiply
    109,166.40x = 163,360.80 × 75,729.60
  4. Step 4: Simplify right side
    109,166.40x = 12,371,248,039.68
  5. Step 5: Solve for x
    x = 12,371,248,039.68/109,166.40
  6. Step 6: Final answer
    x = 113,324.69

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1.5x scale

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.