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Finding the Fourth Proportional to 100,755.04, 139,026.56 and 60,460

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Solution

The fourth proportional to 100,755.04, 139,026.56 and 60,460 is: 83,425.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,755.04 : 139,026.56 = 60,460 : x
  2. Step 2: Convert to fraction form
    100,755.04/139,026.56 = 60,460/x
  3. Step 3: Cross multiply
    100,755.04x = 139,026.56 × 60,460
  4. Step 4: Simplify right side
    100,755.04x = 8,405,545,817.60
  5. Step 5: Solve for x
    x = 8,405,545,817.60/100,755.04
  6. Step 6: Final answer
    x = 83,425.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.