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Finding the Fourth Proportional to 112,612.83, 155,379.60 and 67,305.48

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Solution

The fourth proportional to 112,612.83, 155,379.60 and 67,305.48 is: 92,865.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,612.83 : 155,379.60 = 67,305.48 : x
  2. Step 2: Convert to fraction form
    112,612.83/155,379.60 = 67,305.48/x
  3. Step 3: Cross multiply
    112,612.83x = 155,379.60 × 67,305.48
  4. Step 4: Simplify right side
    112,612.83x = 10,457,898,560.21
  5. Step 5: Solve for x
    x = 10,457,898,560.21/112,612.83
  6. Step 6: Final answer
    x = 92,865.96

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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.