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Finding the Fourth Proportional to 112,310.70, 168,417.45 and 45,728.70

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Solution

The fourth proportional to 112,310.70, 168,417.45 and 45,728.70 is: 68,573.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,310.70 : 168,417.45 = 45,728.70 : x
  2. Step 2: Convert to fraction form
    112,310.70/168,417.45 = 45,728.70/x
  3. Step 3: Cross multiply
    112,310.70x = 168,417.45 × 45,728.70
  4. Step 4: Simplify right side
    112,310.70x = 7,701,511,045.82
  5. Step 5: Solve for x
    x = 7,701,511,045.82/112,310.70
  6. Step 6: Final answer
    x = 68,573.26

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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.