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Finding the Fourth Proportional to 117,639.60, 176,200.20 and 82,388.40

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Solution

The fourth proportional to 117,639.60, 176,200.20 and 82,388.40 is: 123,401.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,639.60 : 176,200.20 = 82,388.40 : x
  2. Step 2: Convert to fraction form
    117,639.60/176,200.20 = 82,388.40/x
  3. Step 3: Cross multiply
    117,639.60x = 176,200.20 × 82,388.40
  4. Step 4: Simplify right side
    117,639.60x = 14,516,852,557.68
  5. Step 5: Solve for x
    x = 14,516,852,557.68/117,639.60
  6. Step 6: Final answer
    x = 123,401.07

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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.