Home / 112,985.31-169,478.97-28,745.58

Finding the Fourth Proportional to 112,985.31, 169,478.97 and 28,745.58

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Solution

The fourth proportional to 112,985.31, 169,478.97 and 28,745.58 is: 43,118.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,985.31 : 169,478.97 = 28,745.58 : x
  2. Step 2: Convert to fraction form
    112,985.31/169,478.97 = 28,745.58/x
  3. Step 3: Cross multiply
    112,985.31x = 169,478.97 × 28,745.58
  4. Step 4: Simplify right side
    112,985.31x = 4,871,771,290.45
  5. Step 5: Solve for x
    x = 4,871,771,290.45/112,985.31
  6. Step 6: Final answer
    x = 43,118.63

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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.