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Finding the Fourth Proportional to 139,957.92, 210,058.20 and 73,445.04

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Solution

The fourth proportional to 139,957.92, 210,058.20 and 73,445.04 is: 110,231.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,957.92 : 210,058.20 = 73,445.04 : x
  2. Step 2: Convert to fraction form
    139,957.92/210,058.20 = 73,445.04/x
  3. Step 3: Cross multiply
    139,957.92x = 210,058.20 × 73,445.04
  4. Step 4: Simplify right side
    139,957.92x = 15,427,732,901.33
  5. Step 5: Solve for x
    x = 15,427,732,901.33/139,957.92
  6. Step 6: Final answer
    x = 110,231.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.