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Finding the Fourth Proportional to 122,508, 168,536.16 and 117,259.20

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Solution

The fourth proportional to 122,508, 168,536.16 and 117,259.20 is: 161,315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,508 : 168,536.16 = 117,259.20 : x
  2. Step 2: Convert to fraction form
    122,508/168,536.16 = 117,259.20/x
  3. Step 3: Cross multiply
    122,508x = 168,536.16 × 117,259.20
  4. Step 4: Simplify right side
    122,508x = 19,762,415,292.67
  5. Step 5: Solve for x
    x = 19,762,415,292.67/122,508
  6. Step 6: Final answer
    x = 161,315.30

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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.