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Finding the Fourth Proportional to 172,989.80, 259,484.70 and 113,892.20

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Solution

The fourth proportional to 172,989.80, 259,484.70 and 113,892.20 is: 170,838.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,989.80 : 259,484.70 = 113,892.20 : x
  2. Step 2: Convert to fraction form
    172,989.80/259,484.70 = 113,892.20/x
  3. Step 3: Cross multiply
    172,989.80x = 259,484.70 × 113,892.20
  4. Step 4: Simplify right side
    172,989.80x = 29,553,283,349.34
  5. Step 5: Solve for x
    x = 29,553,283,349.34/172,989.80
  6. Step 6: Final answer
    x = 170,838.30

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1.5x scale

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.