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Finding the Fourth Proportional to 109,175.80, 162,636.96 and 105,871.80

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Solution

The fourth proportional to 109,175.80, 162,636.96 and 105,871.80 is: 157,715.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,175.80 : 162,636.96 = 105,871.80 : x
  2. Step 2: Convert to fraction form
    109,175.80/162,636.96 = 105,871.80/x
  3. Step 3: Cross multiply
    109,175.80x = 162,636.96 × 105,871.80
  4. Step 4: Simplify right side
    109,175.80x = 17,218,667,701.73
  5. Step 5: Solve for x
    x = 17,218,667,701.73/109,175.80
  6. Step 6: Final answer
    x = 157,715.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.