Home / 120,623.70-166,457.67-66,909.90

Finding the Fourth Proportional to 120,623.70, 166,457.67 and 66,909.90

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Solution

The fourth proportional to 120,623.70, 166,457.67 and 66,909.90 is: 92,333.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,623.70 : 166,457.67 = 66,909.90 : x
  2. Step 2: Convert to fraction form
    120,623.70/166,457.67 = 66,909.90/x
  3. Step 3: Cross multiply
    120,623.70x = 166,457.67 × 66,909.90
  4. Step 4: Simplify right side
    120,623.70x = 11,137,666,053.93
  5. Step 5: Solve for x
    x = 11,137,666,053.93/120,623.70
  6. Step 6: Final answer
    x = 92,333.98

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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.