Home / 122,741.10-169,162.50-90,854.64

Finding the Fourth Proportional to 122,741.10, 169,162.50 and 90,854.64

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Solution

The fourth proportional to 122,741.10, 169,162.50 and 90,854.64 is: 125,216.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,741.10 : 169,162.50 = 90,854.64 : x
  2. Step 2: Convert to fraction form
    122,741.10/169,162.50 = 90,854.64/x
  3. Step 3: Cross multiply
    122,741.10x = 169,162.50 × 90,854.64
  4. Step 4: Simplify right side
    122,741.10x = 15,369,198,039
  5. Step 5: Solve for x
    x = 15,369,198,039/122,741.10
  6. Step 6: Final answer
    x = 125,216.39

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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.