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Finding the Fourth Proportional to 210,091.60, 289,919.24 and 125,207.12

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Solution

The fourth proportional to 210,091.60, 289,919.24 and 125,207.12 is: 172,781.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,091.60 : 289,919.24 = 125,207.12 : x
  2. Step 2: Convert to fraction form
    210,091.60/289,919.24 = 125,207.12/x
  3. Step 3: Cross multiply
    210,091.60x = 289,919.24 × 125,207.12
  4. Step 4: Simplify right side
    210,091.60x = 36,299,953,072.99
  5. Step 5: Solve for x
    x = 36,299,953,072.99/210,091.60
  6. Step 6: Final answer
    x = 172,781.55

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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.