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Finding the Fourth Proportional to 121,807.61, 168,098.22 and 68,094.89

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Solution

The fourth proportional to 121,807.61, 168,098.22 and 68,094.89 is: 93,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,807.61 : 168,098.22 = 68,094.89 : x
  2. Step 2: Convert to fraction form
    121,807.61/168,098.22 = 68,094.89/x
  3. Step 3: Cross multiply
    121,807.61x = 168,098.22 × 68,094.89
  4. Step 4: Simplify right side
    121,807.61x = 11,446,629,800.10
  5. Step 5: Solve for x
    x = 11,446,629,800.10/121,807.61
  6. Step 6: Final answer
    x = 93,973.03

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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.