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Finding the Fourth Proportional to 170,072.84, 254,943.84 and 81,303.32

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Solution

The fourth proportional to 170,072.84, 254,943.84 and 81,303.32 is: 121,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,072.84 : 254,943.84 = 81,303.32 : x
  2. Step 2: Convert to fraction form
    170,072.84/254,943.84 = 81,303.32/x
  3. Step 3: Cross multiply
    170,072.84x = 254,943.84 × 81,303.32
  4. Step 4: Simplify right side
    170,072.84x = 20,727,780,605.55
  5. Step 5: Solve for x
    x = 20,727,780,605.55/170,072.84
  6. Step 6: Final answer
    x = 121,875.90

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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.