Home / 120,907.40-181,176.30-81,317.96

Finding the Fourth Proportional to 120,907.40, 181,176.30 and 81,317.96

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Solution

The fourth proportional to 120,907.40, 181,176.30 and 81,317.96 is: 121,852.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,907.40 : 181,176.30 = 81,317.96 : x
  2. Step 2: Convert to fraction form
    120,907.40/181,176.30 = 81,317.96/x
  3. Step 3: Cross multiply
    120,907.40x = 181,176.30 × 81,317.96
  4. Step 4: Simplify right side
    120,907.40x = 14,732,887,116.35
  5. Step 5: Solve for x
    x = 14,732,887,116.35/120,907.40
  6. Step 6: Final answer
    x = 121,852.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.