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Finding the Fourth Proportional to 115,235.20, 172,852.80 and 108,674.20

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Solution

The fourth proportional to 115,235.20, 172,852.80 and 108,674.20 is: 163,011.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,235.20 : 172,852.80 = 108,674.20 : x
  2. Step 2: Convert to fraction form
    115,235.20/172,852.80 = 108,674.20/x
  3. Step 3: Cross multiply
    115,235.20x = 172,852.80 × 108,674.20
  4. Step 4: Simplify right side
    115,235.20x = 18,784,639,757.76
  5. Step 5: Solve for x
    x = 18,784,639,757.76/115,235.20
  6. Step 6: Final answer
    x = 163,011.30

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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.