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Finding the Fourth Proportional to 122,577, 169,043.94 and 79,511.64

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Solution

The fourth proportional to 122,577, 169,043.94 and 79,511.64 is: 109,653.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,577 : 169,043.94 = 79,511.64 : x
  2. Step 2: Convert to fraction form
    122,577/169,043.94 = 79,511.64/x
  3. Step 3: Cross multiply
    122,577x = 169,043.94 × 79,511.64
  4. Step 4: Simplify right side
    122,577x = 13,440,960,901.46
  5. Step 5: Solve for x
    x = 13,440,960,901.46/122,577
  6. Step 6: Final answer
    x = 109,653.20

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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.