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Finding the Fourth Proportional to 105,230.68, 157,790.58 and 71,960.20

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Solution

The fourth proportional to 105,230.68, 157,790.58 and 71,960.20 is: 107,902.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,230.68 : 157,790.58 = 71,960.20 : x
  2. Step 2: Convert to fraction form
    105,230.68/157,790.58 = 71,960.20/x
  3. Step 3: Cross multiply
    105,230.68x = 157,790.58 × 71,960.20
  4. Step 4: Simplify right side
    105,230.68x = 11,354,641,694.92
  5. Step 5: Solve for x
    x = 11,354,641,694.92/105,230.68
  6. Step 6: Final answer
    x = 107,902.39

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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.