Home / 160,537.08-221,690.09-120,180.78

Finding the Fourth Proportional to 160,537.08, 221,690.09 and 120,180.78

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Solution

The fourth proportional to 160,537.08, 221,690.09 and 120,180.78 is: 165,960.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,537.08 : 221,690.09 = 120,180.78 : x
  2. Step 2: Convert to fraction form
    160,537.08/221,690.09 = 120,180.78/x
  3. Step 3: Cross multiply
    160,537.08x = 221,690.09 × 120,180.78
  4. Step 4: Simplify right side
    160,537.08x = 26,642,887,934.47
  5. Step 5: Solve for x
    x = 26,642,887,934.47/160,537.08
  6. Step 6: Final answer
    x = 165,960.96

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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.