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Finding the Fourth Proportional to 101,282.40, 139,741.26 and 58,259.64

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Solution

The fourth proportional to 101,282.40, 139,741.26 and 58,259.64 is: 80,381.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,282.40 : 139,741.26 = 58,259.64 : x
  2. Step 2: Convert to fraction form
    101,282.40/139,741.26 = 58,259.64/x
  3. Step 3: Cross multiply
    101,282.40x = 139,741.26 × 58,259.64
  4. Step 4: Simplify right side
    101,282.40x = 8,141,275,500.75
  5. Step 5: Solve for x
    x = 8,141,275,500.75/101,282.40
  6. Step 6: Final answer
    x = 80,381.94

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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.