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Finding the Fourth Proportional to 159,873.42, 220,625.70 and 87,276.36

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Solution

The fourth proportional to 159,873.42, 220,625.70 and 87,276.36 is: 120,441.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,873.42 : 220,625.70 = 87,276.36 : x
  2. Step 2: Convert to fraction form
    159,873.42/220,625.70 = 87,276.36/x
  3. Step 3: Cross multiply
    159,873.42x = 220,625.70 × 87,276.36
  4. Step 4: Simplify right side
    159,873.42x = 19,255,408,018.45
  5. Step 5: Solve for x
    x = 19,255,408,018.45/159,873.42
  6. Step 6: Final answer
    x = 120,441.58

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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.