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Finding the Fourth Proportional to 170,070.84, 254,940.84 and 81,301.32

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Solution

The fourth proportional to 170,070.84, 254,940.84 and 81,301.32 is: 121,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,070.84 : 254,940.84 = 81,301.32 : x
  2. Step 2: Convert to fraction form
    170,070.84/254,940.84 = 81,301.32/x
  3. Step 3: Cross multiply
    170,070.84x = 254,940.84 × 81,301.32
  4. Step 4: Simplify right side
    170,070.84x = 20,727,026,813.91
  5. Step 5: Solve for x
    x = 20,727,026,813.91/170,070.84
  6. Step 6: Final answer
    x = 121,872.90

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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.