Home / 120,637.54-166,466.38-66,909.10

Finding the Fourth Proportional to 120,637.54, 166,466.38 and 66,909.10

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Solution

The fourth proportional to 120,637.54, 166,466.38 and 66,909.10 is: 92,327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,637.54 : 166,466.38 = 66,909.10 : x
  2. Step 2: Convert to fraction form
    120,637.54/166,466.38 = 66,909.10/x
  3. Step 3: Cross multiply
    120,637.54x = 166,466.38 × 66,909.10
  4. Step 4: Simplify right side
    120,637.54x = 11,138,115,666.06
  5. Step 5: Solve for x
    x = 11,138,115,666.06/120,637.54
  6. Step 6: Final answer
    x = 92,327.11

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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.