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Finding the Fourth Proportional to 159,580.84, 220,211.62 and 87,961.48

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Solution

The fourth proportional to 159,580.84, 220,211.62 and 87,961.48 is: 121,381.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,580.84 : 220,211.62 = 87,961.48 : x
  2. Step 2: Convert to fraction form
    159,580.84/220,211.62 = 87,961.48/x
  3. Step 3: Cross multiply
    159,580.84x = 220,211.62 × 87,961.48
  4. Step 4: Simplify right side
    159,580.84x = 19,370,140,008.40
  5. Step 5: Solve for x
    x = 19,370,140,008.40/159,580.84
  6. Step 6: Final answer
    x = 121,381.36

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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.