Home / 120,559.08-166,374.90-72,820.92

Finding the Fourth Proportional to 120,559.08, 166,374.90 and 72,820.92

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Solution

The fourth proportional to 120,559.08, 166,374.90 and 72,820.92 is: 100,494.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,559.08 : 166,374.90 = 72,820.92 : x
  2. Step 2: Convert to fraction form
    120,559.08/166,374.90 = 72,820.92/x
  3. Step 3: Cross multiply
    120,559.08x = 166,374.90 × 72,820.92
  4. Step 4: Simplify right side
    120,559.08x = 12,115,573,282.91
  5. Step 5: Solve for x
    x = 12,115,573,282.91/120,559.08
  6. Step 6: Final answer
    x = 100,494.90

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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.