Home / 120,342.28-166,078.47-66,633.21

Finding the Fourth Proportional to 120,342.28, 166,078.47 and 66,633.21

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Solution

The fourth proportional to 120,342.28, 166,078.47 and 66,633.21 is: 91,957.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,342.28 : 166,078.47 = 66,633.21 : x
  2. Step 2: Convert to fraction form
    120,342.28/166,078.47 = 66,633.21/x
  3. Step 3: Cross multiply
    120,342.28x = 166,078.47 × 66,633.21
  4. Step 4: Simplify right side
    120,342.28x = 11,066,341,567.99
  5. Step 5: Solve for x
    x = 11,066,341,567.99/120,342.28
  6. Step 6: Final answer
    x = 91,957.22

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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.