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Finding the Fourth Proportional to 112,537.78, 168,619.23 and 79,187.77

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Solution

The fourth proportional to 112,537.78, 168,619.23 and 79,187.77 is: 118,649.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,537.78 : 168,619.23 = 79,187.77 : x
  2. Step 2: Convert to fraction form
    112,537.78/168,619.23 = 79,187.77/x
  3. Step 3: Cross multiply
    112,537.78x = 168,619.23 × 79,187.77
  4. Step 4: Simplify right side
    112,537.78x = 13,352,580,802.82
  5. Step 5: Solve for x
    x = 13,352,580,802.82/112,537.78
  6. Step 6: Final answer
    x = 118,649.76

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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.