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Finding the Fourth Proportional to 122,224.90, 168,678.15 and 68,509.93

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Solution

The fourth proportional to 122,224.90, 168,678.15 and 68,509.93 is: 94,548.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,224.90 : 168,678.15 = 68,509.93 : x
  2. Step 2: Convert to fraction form
    122,224.90/168,678.15 = 68,509.93/x
  3. Step 3: Cross multiply
    122,224.90x = 168,678.15 × 68,509.93
  4. Step 4: Simplify right side
    122,224.90x = 11,556,127,405.64
  5. Step 5: Solve for x
    x = 11,556,127,405.64/122,224.90
  6. Step 6: Final answer
    x = 94,548.07

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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.