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Finding the Fourth Proportional to 172,815.60, 259,223.40 and 101,956.80

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Solution

The fourth proportional to 172,815.60, 259,223.40 and 101,956.80 is: 152,935.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,815.60 : 259,223.40 = 101,956.80 : x
  2. Step 2: Convert to fraction form
    172,815.60/259,223.40 = 101,956.80/x
  3. Step 3: Cross multiply
    172,815.60x = 259,223.40 × 101,956.80
  4. Step 4: Simplify right side
    172,815.60x = 26,429,588,349.12
  5. Step 5: Solve for x
    x = 26,429,588,349.12/172,815.60
  6. Step 6: Final answer
    x = 152,935.20

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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.