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Finding the Fourth Proportional to 101,178.28, 139,635.95 and 58,734.28

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Solution

The fourth proportional to 101,178.28, 139,635.95 and 58,734.28 is: 81,059.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,178.28 : 139,635.95 = 58,734.28 : x
  2. Step 2: Convert to fraction form
    101,178.28/139,635.95 = 58,734.28/x
  3. Step 3: Cross multiply
    101,178.28x = 139,635.95 × 58,734.28
  4. Step 4: Simplify right side
    101,178.28x = 8,201,416,985.37
  5. Step 5: Solve for x
    x = 8,201,416,985.37/101,178.28
  6. Step 6: Final answer
    x = 81,059.07

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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.