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Finding the Fourth Proportional to 105,670.54, 145,829.87 and 63,220.87

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Solution

The fourth proportional to 105,670.54, 145,829.87 and 63,220.87 is: 87,247.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,670.54 : 145,829.87 = 63,220.87 : x
  2. Step 2: Convert to fraction form
    105,670.54/145,829.87 = 63,220.87/x
  3. Step 3: Cross multiply
    105,670.54x = 145,829.87 × 63,220.87
  4. Step 4: Simplify right side
    105,670.54x = 9,219,491,253.39
  5. Step 5: Solve for x
    x = 9,219,491,253.39/105,670.54
  6. Step 6: Final answer
    x = 87,247.51

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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.