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Finding the Fourth Proportional to 100,950, 139,313.88 and 56,240.88

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Solution

The fourth proportional to 100,950, 139,313.88 and 56,240.88 is: 77,614.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,950 : 139,313.88 = 56,240.88 : x
  2. Step 2: Convert to fraction form
    100,950/139,313.88 = 56,240.88/x
  3. Step 3: Cross multiply
    100,950x = 139,313.88 × 56,240.88
  4. Step 4: Simplify right side
    100,950x = 7,835,135,207.41
  5. Step 5: Solve for x
    x = 7,835,135,207.41/100,950
  6. Step 6: Final answer
    x = 77,614.02

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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.