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Finding the Fourth Proportional to 172,329.68, 258,336.95 and 72,496.92

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Solution

The fourth proportional to 172,329.68, 258,336.95 and 72,496.92 is: 108,679.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,329.68 : 258,336.95 = 72,496.92 : x
  2. Step 2: Convert to fraction form
    172,329.68/258,336.95 = 72,496.92/x
  3. Step 3: Cross multiply
    172,329.68x = 258,336.95 × 72,496.92
  4. Step 4: Simplify right side
    172,329.68x = 18,728,633,803.47
  5. Step 5: Solve for x
    x = 18,728,633,803.47/172,329.68
  6. Step 6: Final answer
    x = 108,679.10

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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.