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Finding the Fourth Proportional to 153,446.94, 211,734.72 and 85,454.46

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Solution

The fourth proportional to 153,446.94, 211,734.72 and 85,454.46 is: 117,914.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,446.94 : 211,734.72 = 85,454.46 : x
  2. Step 2: Convert to fraction form
    153,446.94/211,734.72 = 85,454.46/x
  3. Step 3: Cross multiply
    153,446.94x = 211,734.72 × 85,454.46
  4. Step 4: Simplify right side
    153,446.94x = 18,093,676,160.85
  5. Step 5: Solve for x
    x = 18,093,676,160.85/153,446.94
  6. Step 6: Final answer
    x = 117,914.87

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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.