Home / 120,220.66-166,046.52-90,137.26

Finding the Fourth Proportional to 120,220.66, 166,046.52 and 90,137.26

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Solution

The fourth proportional to 120,220.66, 166,046.52 and 90,137.26 is: 124,495.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,220.66 : 166,046.52 = 90,137.26 : x
  2. Step 2: Convert to fraction form
    120,220.66/166,046.52 = 90,137.26/x
  3. Step 3: Cross multiply
    120,220.66x = 166,046.52 × 90,137.26
  4. Step 4: Simplify right side
    120,220.66x = 14,966,978,345.34
  5. Step 5: Solve for x
    x = 14,966,978,345.34/120,220.66
  6. Step 6: Final answer
    x = 124,495.89

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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.