Home / 120,234.18-165,926.25-72,490.59

Finding the Fourth Proportional to 120,234.18, 165,926.25 and 72,490.59

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Solution

The fourth proportional to 120,234.18, 165,926.25 and 72,490.59 is: 100,038.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,234.18 : 165,926.25 = 72,490.59 : x
  2. Step 2: Convert to fraction form
    120,234.18/165,926.25 = 72,490.59/x
  3. Step 3: Cross multiply
    120,234.18x = 165,926.25 × 72,490.59
  4. Step 4: Simplify right side
    120,234.18x = 12,028,091,758.99
  5. Step 5: Solve for x
    x = 12,028,091,758.99/120,234.18
  6. Step 6: Final answer
    x = 100,038.87

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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.