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Finding the Fourth Proportional to 118,346.85, 177,520.28 and 71,690.85

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Solution

The fourth proportional to 118,346.85, 177,520.28 and 71,690.85 is: 107,536.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,346.85 : 177,520.28 = 71,690.85 : x
  2. Step 2: Convert to fraction form
    118,346.85/177,520.28 = 71,690.85/x
  3. Step 3: Cross multiply
    118,346.85x = 177,520.28 × 71,690.85
  4. Step 4: Simplify right side
    118,346.85x = 12,726,579,406.98
  5. Step 5: Solve for x
    x = 12,726,579,406.98/118,346.85
  6. Step 6: Final answer
    x = 107,536.28

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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.