Home / 120,309.18-166,012.03-66,590.92

Finding the Fourth Proportional to 120,309.18, 166,012.03 and 66,590.92

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Solution

The fourth proportional to 120,309.18, 166,012.03 and 66,590.92 is: 91,887.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,309.18 : 166,012.03 = 66,590.92 : x
  2. Step 2: Convert to fraction form
    120,309.18/166,012.03 = 66,590.92/x
  3. Step 3: Cross multiply
    120,309.18x = 166,012.03 × 66,590.92
  4. Step 4: Simplify right side
    120,309.18x = 11,054,893,808.77
  5. Step 5: Solve for x
    x = 11,054,893,808.77/120,309.18
  6. Step 6: Final answer
    x = 91,887.37

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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.