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Finding the Fourth Proportional to 159,580.56, 220,211.16 and 87,956.64

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Solution

The fourth proportional to 159,580.56, 220,211.16 and 87,956.64 is: 121,374.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,580.56 : 220,211.16 = 87,956.64 : x
  2. Step 2: Convert to fraction form
    159,580.56/220,211.16 = 87,956.64/x
  3. Step 3: Cross multiply
    159,580.56x = 220,211.16 × 87,956.64
  4. Step 4: Simplify right side
    159,580.56x = 19,369,033,724.10
  5. Step 5: Solve for x
    x = 19,369,033,724.10/159,580.56
  6. Step 6: Final answer
    x = 121,374.64

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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.