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Finding the Fourth Proportional to 117,403.20, 176,104.80 and 89,409.60

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Solution

The fourth proportional to 117,403.20, 176,104.80 and 89,409.60 is: 134,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,403.20 : 176,104.80 = 89,409.60 : x
  2. Step 2: Convert to fraction form
    117,403.20/176,104.80 = 89,409.60/x
  3. Step 3: Cross multiply
    117,403.20x = 176,104.80 × 89,409.60
  4. Step 4: Simplify right side
    117,403.20x = 15,745,459,726.08
  5. Step 5: Solve for x
    x = 15,745,459,726.08/117,403.20
  6. Step 6: Final answer
    x = 134,114.40

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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.