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Finding the Fourth Proportional to 172,342.16, 258,406.68 and 67,037.84

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Solution

The fourth proportional to 172,342.16, 258,406.68 and 67,037.84 is: 100,515.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,342.16 : 258,406.68 = 67,037.84 : x
  2. Step 2: Convert to fraction form
    172,342.16/258,406.68 = 67,037.84/x
  3. Step 3: Cross multiply
    172,342.16x = 258,406.68 × 67,037.84
  4. Step 4: Simplify right side
    172,342.16x = 17,323,025,668.77
  5. Step 5: Solve for x
    x = 17,323,025,668.77/172,342.16
  6. Step 6: Final answer
    x = 100,515.31

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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.