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Finding the Fourth Proportional to 101,210, 139,682.10 and 58,768.53

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Solution

The fourth proportional to 101,210, 139,682.10 and 58,768.53 is: 81,107.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,210 : 139,682.10 = 58,768.53 : x
  2. Step 2: Convert to fraction form
    101,210/139,682.10 = 58,768.53/x
  3. Step 3: Cross multiply
    101,210x = 139,682.10 × 58,768.53
  4. Step 4: Simplify right side
    101,210x = 8,208,911,684.31
  5. Step 5: Solve for x
    x = 8,208,911,684.31/101,210
  6. Step 6: Final answer
    x = 81,107.71

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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.