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Finding the Fourth Proportional to 112,239.51, 154,893.78 and 61,255.51

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Solution

The fourth proportional to 112,239.51, 154,893.78 and 61,255.51 is: 84,534.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,239.51 : 154,893.78 = 61,255.51 : x
  2. Step 2: Convert to fraction form
    112,239.51/154,893.78 = 61,255.51/x
  3. Step 3: Cross multiply
    112,239.51x = 154,893.78 × 61,255.51
  4. Step 4: Simplify right side
    112,239.51x = 9,488,097,489.73
  5. Step 5: Solve for x
    x = 9,488,097,489.73/112,239.51
  6. Step 6: Final answer
    x = 84,534.38

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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.