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Finding the Fourth Proportional to 112,179.63, 154,818.82 and 61,878.63

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Solution

The fourth proportional to 112,179.63, 154,818.82 and 61,878.63 is: 85,398.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,179.63 : 154,818.82 = 61,878.63 : x
  2. Step 2: Convert to fraction form
    112,179.63/154,818.82 = 61,878.63/x
  3. Step 3: Cross multiply
    112,179.63x = 154,818.82 × 61,878.63
  4. Step 4: Simplify right side
    112,179.63x = 9,579,976,479.82
  5. Step 5: Solve for x
    x = 9,579,976,479.82/112,179.63
  6. Step 6: Final answer
    x = 85,398.54

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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.