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Finding the Fourth Proportional to 171,642.80, 257,464.20 and 119,154.80

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Solution

The fourth proportional to 171,642.80, 257,464.20 and 119,154.80 is: 178,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,642.80 : 257,464.20 = 119,154.80 : x
  2. Step 2: Convert to fraction form
    171,642.80/257,464.20 = 119,154.80/x
  3. Step 3: Cross multiply
    171,642.80x = 257,464.20 × 119,154.80
  4. Step 4: Simplify right side
    171,642.80x = 30,678,095,258.16
  5. Step 5: Solve for x
    x = 30,678,095,258.16/171,642.80
  6. Step 6: Final answer
    x = 178,732.20

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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.