Home / 172,421.12-258,439.92-72,551.84

Finding the Fourth Proportional to 172,421.12, 258,439.92 and 72,551.84

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Solution

The fourth proportional to 172,421.12, 258,439.92 and 72,551.84 is: 108,747.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,421.12 : 258,439.92 = 72,551.84 : x
  2. Step 2: Convert to fraction form
    172,421.12/258,439.92 = 72,551.84/x
  3. Step 3: Cross multiply
    172,421.12x = 258,439.92 × 72,551.84
  4. Step 4: Simplify right side
    172,421.12x = 18,750,291,725.45
  5. Step 5: Solve for x
    x = 18,750,291,725.45/172,421.12
  6. Step 6: Final answer
    x = 108,747.07

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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.