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Finding the Fourth Proportional to 159,204.56, 219,699.95 and 87,580.31

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Solution

The fourth proportional to 159,204.56, 219,699.95 and 87,580.31 is: 120,859.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,204.56 : 219,699.95 = 87,580.31 : x
  2. Step 2: Convert to fraction form
    159,204.56/219,699.95 = 87,580.31/x
  3. Step 3: Cross multiply
    159,204.56x = 219,699.95 × 87,580.31
  4. Step 4: Simplify right side
    159,204.56x = 19,241,388,191.58
  5. Step 5: Solve for x
    x = 19,241,388,191.58/159,204.56
  6. Step 6: Final answer
    x = 120,859.53

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1.5x scale

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.