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Finding the Fourth Proportional to 142,004.70, 195,975.99 and 81,594.90

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Solution

The fourth proportional to 142,004.70, 195,975.99 and 81,594.90 is: 112,606.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,004.70 : 195,975.99 = 81,594.90 : x
  2. Step 2: Convert to fraction form
    142,004.70/195,975.99 = 81,594.90/x
  3. Step 3: Cross multiply
    142,004.70x = 195,975.99 × 81,594.90
  4. Step 4: Simplify right side
    142,004.70x = 15,990,641,306.45
  5. Step 5: Solve for x
    x = 15,990,641,306.45/142,004.70
  6. Step 6: Final answer
    x = 112,606.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.