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Finding the Fourth Proportional to 101,083.47, 139,540.01 and 65,290.93

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Solution

The fourth proportional to 101,083.47, 139,540.01 and 65,290.93 is: 90,130.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,083.47 : 139,540.01 = 65,290.93 : x
  2. Step 2: Convert to fraction form
    101,083.47/139,540.01 = 65,290.93/x
  3. Step 3: Cross multiply
    101,083.47x = 139,540.01 × 65,290.93
  4. Step 4: Simplify right side
    101,083.47x = 9,110,696,349.80
  5. Step 5: Solve for x
    x = 9,110,696,349.80/101,083.47
  6. Step 6: Final answer
    x = 90,130.43

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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.