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Finding the Fourth Proportional to 159,575.56, 220,213.16 and 87,955.64

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Solution

The fourth proportional to 159,575.56, 220,213.16 and 87,955.64 is: 121,378.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,575.56 : 220,213.16 = 87,955.64 : x
  2. Step 2: Convert to fraction form
    159,575.56/220,213.16 = 87,955.64/x
  3. Step 3: Cross multiply
    159,575.56x = 220,213.16 × 87,955.64
  4. Step 4: Simplify right side
    159,575.56x = 19,368,989,424.22
  5. Step 5: Solve for x
    x = 19,368,989,424.22/159,575.56
  6. Step 6: Final answer
    x = 121,378.17

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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.