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Finding the Fourth Proportional to 170,685.90, 255,964.05 and 56,812.05

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Solution

The fourth proportional to 170,685.90, 255,964.05 and 56,812.05 is: 85,196.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,685.90 : 255,964.05 = 56,812.05 : x
  2. Step 2: Convert to fraction form
    170,685.90/255,964.05 = 56,812.05/x
  3. Step 3: Cross multiply
    170,685.90x = 255,964.05 × 56,812.05
  4. Step 4: Simplify right side
    170,685.90x = 14,541,842,406.80
  5. Step 5: Solve for x
    x = 14,541,842,406.80/170,685.90
  6. Step 6: Final answer
    x = 85,196.51

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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.