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Finding the Fourth Proportional to 172,359.04, 258,488.32 and 67,154.56

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Solution

The fourth proportional to 172,359.04, 258,488.32 and 67,154.56 is: 100,712.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,359.04 : 258,488.32 = 67,154.56 : x
  2. Step 2: Convert to fraction form
    172,359.04/258,488.32 = 67,154.56/x
  3. Step 3: Cross multiply
    172,359.04x = 258,488.32 × 67,154.56
  4. Step 4: Simplify right side
    172,359.04x = 17,358,669,394.74
  5. Step 5: Solve for x
    x = 17,358,669,394.74/172,359.04
  6. Step 6: Final answer
    x = 100,712.27

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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.