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Finding the Fourth Proportional to 101,462.52, 139,986.54 and 61,188.60

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Solution

The fourth proportional to 101,462.52, 139,986.54 and 61,188.60 is: 84,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,462.52 : 139,986.54 = 61,188.60 : x
  2. Step 2: Convert to fraction form
    101,462.52/139,986.54 = 61,188.60/x
  3. Step 3: Cross multiply
    101,462.52x = 139,986.54 × 61,188.60
  4. Step 4: Simplify right side
    101,462.52x = 8,565,580,401.44
  5. Step 5: Solve for x
    x = 8,565,580,401.44/101,462.52
  6. Step 6: Final answer
    x = 84,421.13

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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.