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Finding the Fourth Proportional to 103,656.58, 143,053.35 and 58,338.93

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Solution

The fourth proportional to 103,656.58, 143,053.35 and 58,338.93 is: 80,511.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,656.58 : 143,053.35 = 58,338.93 : x
  2. Step 2: Convert to fraction form
    103,656.58/143,053.35 = 58,338.93/x
  3. Step 3: Cross multiply
    103,656.58x = 143,053.35 × 58,338.93
  4. Step 4: Simplify right side
    103,656.58x = 8,345,579,371.92
  5. Step 5: Solve for x
    x = 8,345,579,371.92/103,656.58
  6. Step 6: Final answer
    x = 80,511.81

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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.