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Finding the Fourth Proportional to 81,164.40, 121,527.90 and 63,668.40

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Solution

The fourth proportional to 81,164.40, 121,527.90 and 63,668.40 is: 95,331.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,164.40 : 121,527.90 = 63,668.40 : x
  2. Step 2: Convert to fraction form
    81,164.40/121,527.90 = 63,668.40/x
  3. Step 3: Cross multiply
    81,164.40x = 121,527.90 × 63,668.40
  4. Step 4: Simplify right side
    81,164.40x = 7,737,486,948.36
  5. Step 5: Solve for x
    x = 7,737,486,948.36/81,164.40
  6. Step 6: Final answer
    x = 95,331.04

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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.