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Finding the Fourth Proportional to 103,745.93, 142,236.22 and 101,854.51

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Solution

The fourth proportional to 103,745.93, 142,236.22 and 101,854.51 is: 139,643.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,745.93 : 142,236.22 = 101,854.51 : x
  2. Step 2: Convert to fraction form
    103,745.93/142,236.22 = 101,854.51/x
  3. Step 3: Cross multiply
    103,745.93x = 142,236.22 × 101,854.51
  4. Step 4: Simplify right side
    103,745.93x = 14,487,400,873.18
  5. Step 5: Solve for x
    x = 14,487,400,873.18/103,745.93
  6. Step 6: Final answer
    x = 139,643.08

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.