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Finding the Fourth Proportional to 172,892.84, 257,987.05 and 136,946.84

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Solution

The fourth proportional to 172,892.84, 257,987.05 and 136,946.84 is: 204,349.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,892.84 : 257,987.05 = 136,946.84 : x
  2. Step 2: Convert to fraction form
    172,892.84/257,987.05 = 136,946.84/x
  3. Step 3: Cross multiply
    172,892.84x = 257,987.05 × 136,946.84
  4. Step 4: Simplify right side
    172,892.84x = 35,330,511,258.42
  5. Step 5: Solve for x
    x = 35,330,511,258.42/172,892.84
  6. Step 6: Final answer
    x = 204,349.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.