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Finding the Fourth Proportional to 114,641.80, 171,962.70 and 108,518.20

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Solution

The fourth proportional to 114,641.80, 171,962.70 and 108,518.20 is: 162,777.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,641.80 : 171,962.70 = 108,518.20 : x
  2. Step 2: Convert to fraction form
    114,641.80/171,962.70 = 108,518.20/x
  3. Step 3: Cross multiply
    114,641.80x = 171,962.70 × 108,518.20
  4. Step 4: Simplify right side
    114,641.80x = 18,661,082,671.14
  5. Step 5: Solve for x
    x = 18,661,082,671.14/114,641.80
  6. Step 6: Final answer
    x = 162,777.30

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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.