Home / 122,815.63-169,506.03-71,125.28

Finding the Fourth Proportional to 122,815.63, 169,506.03 and 71,125.28

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Solution

The fourth proportional to 122,815.63, 169,506.03 and 71,125.28 is: 98,164.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,815.63 : 169,506.03 = 71,125.28 : x
  2. Step 2: Convert to fraction form
    122,815.63/169,506.03 = 71,125.28/x
  3. Step 3: Cross multiply
    122,815.63x = 169,506.03 × 71,125.28
  4. Step 4: Simplify right side
    122,815.63x = 12,056,163,845.44
  5. Step 5: Solve for x
    x = 12,056,163,845.44/122,815.63
  6. Step 6: Final answer
    x = 98,164.74

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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.