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Finding the Fourth Proportional to 117,813.20, 176,719.80 and 109,259.60

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Solution

The fourth proportional to 117,813.20, 176,719.80 and 109,259.60 is: 163,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,813.20 : 176,719.80 = 109,259.60 : x
  2. Step 2: Convert to fraction form
    117,813.20/176,719.80 = 109,259.60/x
  3. Step 3: Cross multiply
    117,813.20x = 176,719.80 × 109,259.60
  4. Step 4: Simplify right side
    117,813.20x = 19,308,334,660.08
  5. Step 5: Solve for x
    x = 19,308,334,660.08/117,813.20
  6. Step 6: Final answer
    x = 163,889.40

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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.