Home / 105,402.72-158,121.36-43,056.48

Finding the Fourth Proportional to 105,402.72, 158,121.36 and 43,056.48

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Solution

The fourth proportional to 105,402.72, 158,121.36 and 43,056.48 is: 64,591.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,402.72 : 158,121.36 = 43,056.48 : x
  2. Step 2: Convert to fraction form
    105,402.72/158,121.36 = 43,056.48/x
  3. Step 3: Cross multiply
    105,402.72x = 158,121.36 × 43,056.48
  4. Step 4: Simplify right side
    105,402.72x = 6,808,149,174.41
  5. Step 5: Solve for x
    x = 6,808,149,174.41/105,402.72
  6. Step 6: Final answer
    x = 64,591.78

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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.