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Finding the Fourth Proportional to 108,471.42, 149,696.10 and 60,721.92

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Solution

The fourth proportional to 108,471.42, 149,696.10 and 60,721.92 is: 83,799.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,471.42 : 149,696.10 = 60,721.92 : x
  2. Step 2: Convert to fraction form
    108,471.42/149,696.10 = 60,721.92/x
  3. Step 3: Cross multiply
    108,471.42x = 149,696.10 × 60,721.92
  4. Step 4: Simplify right side
    108,471.42x = 9,089,834,608.51
  5. Step 5: Solve for x
    x = 9,089,834,608.51/108,471.42
  6. Step 6: Final answer
    x = 83,799.35

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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.