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Finding the Fourth Proportional to 172,479.60, 258,719.40 and 125,823.60

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Solution

The fourth proportional to 172,479.60, 258,719.40 and 125,823.60 is: 188,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,479.60 : 258,719.40 = 125,823.60 : x
  2. Step 2: Convert to fraction form
    172,479.60/258,719.40 = 125,823.60/x
  3. Step 3: Cross multiply
    172,479.60x = 258,719.40 × 125,823.60
  4. Step 4: Simplify right side
    172,479.60x = 32,553,006,297.84
  5. Step 5: Solve for x
    x = 32,553,006,297.84/172,479.60
  6. Step 6: Final answer
    x = 188,735.40

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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.