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Finding the Fourth Proportional to 122,271.88, 168,765.18 and 74,551.52

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Solution

The fourth proportional to 122,271.88, 168,765.18 and 74,551.52 is: 102,899.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,271.88 : 168,765.18 = 74,551.52 : x
  2. Step 2: Convert to fraction form
    122,271.88/168,765.18 = 74,551.52/x
  3. Step 3: Cross multiply
    122,271.88x = 168,765.18 × 74,551.52
  4. Step 4: Simplify right side
    122,271.88x = 12,581,700,692.07
  5. Step 5: Solve for x
    x = 12,581,700,692.07/122,271.88
  6. Step 6: Final answer
    x = 102,899.38

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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.