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Finding the Fourth Proportional to 120,672.90, 166,529.75 and 66,962.91

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Solution

The fourth proportional to 120,672.90, 166,529.75 and 66,962.91 is: 92,409.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,672.90 : 166,529.75 = 66,962.91 : x
  2. Step 2: Convert to fraction form
    120,672.90/166,529.75 = 66,962.91/x
  3. Step 3: Cross multiply
    120,672.90x = 166,529.75 × 66,962.91
  4. Step 4: Simplify right side
    120,672.90x = 11,151,316,326.76
  5. Step 5: Solve for x
    x = 11,151,316,326.76/120,672.90
  6. Step 6: Final answer
    x = 92,409.45

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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.