Home / 120,665.61-166,542.75-69,686.64

Finding the Fourth Proportional to 120,665.61, 166,542.75 and 69,686.64

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Solution

The fourth proportional to 120,665.61, 166,542.75 and 69,686.64 is: 96,181.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,665.61 : 166,542.75 = 69,686.64 : x
  2. Step 2: Convert to fraction form
    120,665.61/166,542.75 = 69,686.64/x
  3. Step 3: Cross multiply
    120,665.61x = 166,542.75 × 69,686.64
  4. Step 4: Simplify right side
    120,665.61x = 11,605,804,663.86
  5. Step 5: Solve for x
    x = 11,605,804,663.86/120,665.61
  6. Step 6: Final answer
    x = 96,181.54

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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.