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Finding the Fourth Proportional to 112,714, 155,544.21 and 61,030.85

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Solution

The fourth proportional to 112,714, 155,544.21 and 61,030.85 is: 84,221.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,714 : 155,544.21 = 61,030.85 : x
  2. Step 2: Convert to fraction form
    112,714/155,544.21 = 61,030.85/x
  3. Step 3: Cross multiply
    112,714x = 155,544.21 × 61,030.85
  4. Step 4: Simplify right side
    112,714x = 9,492,995,043.72
  5. Step 5: Solve for x
    x = 9,492,995,043.72/112,714
  6. Step 6: Final answer
    x = 84,221.97

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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.