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Finding the Fourth Proportional to 122,513.37, 169,068.47 and 68,798.42

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Solution

The fourth proportional to 122,513.37, 169,068.47 and 68,798.42 is: 94,941.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,513.37 : 169,068.47 = 68,798.42 : x
  2. Step 2: Convert to fraction form
    122,513.37/169,068.47 = 68,798.42/x
  3. Step 3: Cross multiply
    122,513.37x = 169,068.47 × 68,798.42
  4. Step 4: Simplify right side
    122,513.37x = 11,631,642,418.48
  5. Step 5: Solve for x
    x = 11,631,642,418.48/122,513.37
  6. Step 6: Final answer
    x = 94,941.82

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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.