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Finding the Fourth Proportional to 169,615.16, 254,428.14 and 85,329.26

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Solution

The fourth proportional to 169,615.16, 254,428.14 and 85,329.26 is: 127,996.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,615.16 : 254,428.14 = 85,329.26 : x
  2. Step 2: Convert to fraction form
    169,615.16/254,428.14 = 85,329.26/x
  3. Step 3: Cross multiply
    169,615.16x = 254,428.14 × 85,329.26
  4. Step 4: Simplify right side
    169,615.16x = 21,710,164,909.38
  5. Step 5: Solve for x
    x = 21,710,164,909.38/169,615.16
  6. Step 6: Final answer
    x = 127,996.61

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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.