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Finding the Fourth Proportional to 216,809.01, 299,160.72 and 136,179.09

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Solution

The fourth proportional to 216,809.01, 299,160.72 and 136,179.09 is: 187,904.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,809.01 : 299,160.72 = 136,179.09 : x
  2. Step 2: Convert to fraction form
    216,809.01/299,160.72 = 136,179.09/x
  3. Step 3: Cross multiply
    216,809.01x = 299,160.72 × 136,179.09
  4. Step 4: Simplify right side
    216,809.01x = 40,739,434,613.34
  5. Step 5: Solve for x
    x = 40,739,434,613.34/216,809.01
  6. Step 6: Final answer
    x = 187,904.71

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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.