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Finding the Fourth Proportional to 122,377.79, 168,881.15 and 68,667.80

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Solution

The fourth proportional to 122,377.79, 168,881.15 and 68,667.80 is: 94,761.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,377.79 : 168,881.15 = 68,667.80 : x
  2. Step 2: Convert to fraction form
    122,377.79/168,881.15 = 68,667.80/x
  3. Step 3: Cross multiply
    122,377.79x = 168,881.15 × 68,667.80
  4. Step 4: Simplify right side
    122,377.79x = 11,596,695,844.23
  5. Step 5: Solve for x
    x = 11,596,695,844.23/122,377.79
  6. Step 6: Final answer
    x = 94,761.45

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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.