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Finding the Fourth Proportional to 100,893.95, 139,233.64 and 58,477.08

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Solution

The fourth proportional to 100,893.95, 139,233.64 and 58,477.08 is: 80,698.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,893.95 : 139,233.64 = 58,477.08 : x
  2. Step 2: Convert to fraction form
    100,893.95/139,233.64 = 58,477.08/x
  3. Step 3: Cross multiply
    100,893.95x = 139,233.64 × 58,477.08
  4. Step 4: Simplify right side
    100,893.95x = 8,141,976,558.78
  5. Step 5: Solve for x
    x = 8,141,976,558.78/100,893.95
  6. Step 6: Final answer
    x = 80,698.37

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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.