Home / 120,478.19-166,266.54-66,762.09

Finding the Fourth Proportional to 120,478.19, 166,266.54 and 66,762.09

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Solution

The fourth proportional to 120,478.19, 166,266.54 and 66,762.09 is: 92,135.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,478.19 : 166,266.54 = 66,762.09 : x
  2. Step 2: Convert to fraction form
    120,478.19/166,266.54 = 66,762.09/x
  3. Step 3: Cross multiply
    120,478.19x = 166,266.54 × 66,762.09
  4. Step 4: Simplify right side
    120,478.19x = 11,100,301,707.47
  5. Step 5: Solve for x
    x = 11,100,301,707.47/120,478.19
  6. Step 6: Final answer
    x = 92,135.37

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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.