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Finding the Fourth Proportional to 112,149.68, 154,764.62 and 61,162.82

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Solution

The fourth proportional to 112,149.68, 154,764.62 and 61,162.82 is: 84,403.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,149.68 : 154,764.62 = 61,162.82 : x
  2. Step 2: Convert to fraction form
    112,149.68/154,764.62 = 61,162.82/x
  3. Step 3: Cross multiply
    112,149.68x = 154,764.62 × 61,162.82
  4. Step 4: Simplify right side
    112,149.68x = 9,465,840,595.43
  5. Step 5: Solve for x
    x = 9,465,840,595.43/112,149.68
  6. Step 6: Final answer
    x = 84,403.63

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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.