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Finding the Fourth Proportional to 159,562.56, 220,186.42 and 87,938.60

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Solution

The fourth proportional to 159,562.56, 220,186.42 and 87,938.60 is: 121,349.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,562.56 : 220,186.42 = 87,938.60 : x
  2. Step 2: Convert to fraction form
    159,562.56/220,186.42 = 87,938.60/x
  3. Step 3: Cross multiply
    159,562.56x = 220,186.42 × 87,938.60
  4. Step 4: Simplify right side
    159,562.56x = 19,362,885,513.81
  5. Step 5: Solve for x
    x = 19,362,885,513.81/159,562.56
  6. Step 6: Final answer
    x = 121,349.80

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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.