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Finding the Fourth Proportional to 170,071.84, 254,942.34 and 81,302.32

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Solution

The fourth proportional to 170,071.84, 254,942.34 and 81,302.32 is: 121,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,071.84 : 254,942.34 = 81,302.32 : x
  2. Step 2: Convert to fraction form
    170,071.84/254,942.34 = 81,302.32/x
  3. Step 3: Cross multiply
    170,071.84x = 254,942.34 × 81,302.32
  4. Step 4: Simplify right side
    170,071.84x = 20,727,403,708.23
  5. Step 5: Solve for x
    x = 20,727,403,708.23/170,071.84
  6. Step 6: Final answer
    x = 121,874.40

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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.