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Finding the Fourth Proportional to 101,270.80, 139,757.16 and 63,565.84

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Solution

The fourth proportional to 101,270.80, 139,757.16 and 63,565.84 is: 87,723.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,270.80 : 139,757.16 = 63,565.84 : x
  2. Step 2: Convert to fraction form
    101,270.80/139,757.16 = 63,565.84/x
  3. Step 3: Cross multiply
    101,270.80x = 139,757.16 × 63,565.84
  4. Step 4: Simplify right side
    101,270.80x = 8,883,781,271.41
  5. Step 5: Solve for x
    x = 8,883,781,271.41/101,270.80
  6. Step 6: Final answer
    x = 87,723.03

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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.