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Finding the Fourth Proportional to 109,666.30, 164,499.45 and 91,951.60

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Solution

The fourth proportional to 109,666.30, 164,499.45 and 91,951.60 is: 137,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,666.30 : 164,499.45 = 91,951.60 : x
  2. Step 2: Convert to fraction form
    109,666.30/164,499.45 = 91,951.60/x
  3. Step 3: Cross multiply
    109,666.30x = 164,499.45 × 91,951.60
  4. Step 4: Simplify right side
    109,666.30x = 15,125,987,626.62
  5. Step 5: Solve for x
    x = 15,125,987,626.62/109,666.30
  6. Step 6: Final answer
    x = 137,927.40

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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.