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Finding the Fourth Proportional to 101,176, 139,625.12 and 55,853.88

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Solution

The fourth proportional to 101,176, 139,625.12 and 55,853.88 is: 77,079.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,176 : 139,625.12 = 55,853.88 : x
  2. Step 2: Convert to fraction form
    101,176/139,625.12 = 55,853.88/x
  3. Step 3: Cross multiply
    101,176x = 139,625.12 × 55,853.88
  4. Step 4: Simplify right side
    101,176x = 7,798,604,697.47
  5. Step 5: Solve for x
    x = 7,798,604,697.47/101,176
  6. Step 6: Final answer
    x = 77,079.59

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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.