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Finding the Fourth Proportional to 163,928.40, 245,892.60 and 80,811.60

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Solution

The fourth proportional to 163,928.40, 245,892.60 and 80,811.60 is: 121,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,928.40 : 245,892.60 = 80,811.60 : x
  2. Step 2: Convert to fraction form
    163,928.40/245,892.60 = 80,811.60/x
  3. Step 3: Cross multiply
    163,928.40x = 245,892.60 × 80,811.60
  4. Step 4: Simplify right side
    163,928.40x = 19,870,974,434.16
  5. Step 5: Solve for x
    x = 19,870,974,434.16/163,928.40
  6. Step 6: Final answer
    x = 121,217.40

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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.